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About Hex Head Screws and Bolts
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Low-Strength Steel Hex Head Screws
Fully Threaded
Partially Threaded
About half as strong as medium-strength steel screws, these screws can be used for light duty fastening applications, such as securing access panels. Length is measured from under the head.
Hot-dipped galvanized steel screws are 10 times more corrosion resistant than zinc-plated screws. They have a thicker coating than other finishes; to ensure compatibility, use these screws with hot-dipped galvanized steel nuts.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Screws that meet ASTM A307 or SAE J429 comply with specifications and testing requirements for material quality. Screws that meet ASME B18.2.1 or ASME B18.6.3 comply with specifications for dimensional standards.
For technical drawings and 3-D models, click on a part number.
Screws | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Nuts | |||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Pkg. | ||
Hot-Dipped Galvanized Steel | ||||||||||||
1/4"-20 | ||||||||||||
| 1" | Fully Threaded | __ | Coarse | 7/16" | 11/64" | 60,000 | ASME B18.2.1, ASTM A307 | 100 | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 7/16" | 11/64" | 60,000 | ASME B18.2.1, ASTM A307 | 100 | 000000000 | 00000 | 000000000 | 0000 |
| 2" | Partially Threaded | 3/4" | Coarse | 7/16" | 11/64" | 60,000 | ASME B18.2.1, ASTM A307 | 100 | 000000000 | 00000 | 000000000 | 0000 |
| 2 1/2" | Partially Threaded | 3/4" | Coarse | 7/16" | 11/64" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 0000 | 000000000 | 0000 |
| 3" | Partially Threaded | 3/4" | Coarse | 7/16" | 11/64" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 0000 |
3/8"-16 | ||||||||||||
| 1" | Fully Threaded | __ | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 50 | 000000000 | 00000 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 0000 | 000000000 | 0000 |
| 2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 0000 |
| 2 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 0000 |
| 3" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 0000 |
| 3 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 5 | 000000000 | 0000 | 000000000 | 0000 |
| 4" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 0000 |
| 5" | Partially Threaded | 1" | Coarse | 9/16" | 1/4" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 0000 | 000000000 | 0000 |
1/2"-13 | ||||||||||||
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 25 | 000000000 | 00000 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 0000 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 5 | 000000000 | 0000 | 000000000 | 00000 |
| 4" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 5" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 6" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 11/32" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
5/8"-11 | ||||||||||||
| 2" | Fully Threaded | __ | Coarse | 15/16" | 27/64" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
| 4" | Partially Threaded | 1 1/2" | Coarse | 15/16" | 27/64" | 60,000 | ASME B18.2.1, ASTM A307 | 10 | 000000000 | 00000 | 000000000 | 00000 |
Medium-Strength Steel Heavy Hex Head Screws for Structural Applications
Fully Threaded
Partially Threaded
The most common heavy hex head screw, these steel screws meet ASTM A325 regulations for structural joints, such as mating I-beams and scaffolding. Material meets ASTM F3125 specifications for quality. Dimensions meet ASME B18.2.6 specifications. Length is measured from under the head.
Partially threaded screws come with precise threaded and unthreaded portions, allowing you to place only the stronger unthreaded portion (grip) in joints subjected to sideways forces.
Hot-dipped galvanized screws have a thick coating for excellent corrosion resistance. To ensure compatibility, use these screws with hot-dipped galvanized steel nuts.
For technical drawings and 3-D models, click on a part number.
Hot-Dipped Galvanized Grade A325 Steel
Screws | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Hot-Dipped Galvanized Nuts | |||||||||||||
| Lg. | Threading | Thread Spacing | Thread Lg. | Grip Lg. | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Pkg. Qty. | Pkg. | ||
1/2"-13 | ||||||||||||||
| 1 1/4" | Fully Threaded | Coarse | __ | __ | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 000000 | 25 | 000000000 | 000000 |
| 1 1/2" | Partially Threaded | Coarse | 1" | 1/2" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | Coarse | 1" | 3/4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 2" | Partially Threaded | Coarse | 1" | 1" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | Coarse | 1" | 1 1/4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | Coarse | 1" | 1 1/2" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 2 3/4" | Partially Threaded | Coarse | 1" | 1 3/4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 3" | Partially Threaded | Coarse | 1" | 2" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 3 1/4" | Partially Threaded | Coarse | 1" | 2 1/4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | Coarse | 1" | 2 1/2" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 3 3/4" | Partially Threaded | Coarse | 1" | 2 3/4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 4" | Partially Threaded | Coarse | 1" | 3" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 4 1/4" | Partially Threaded | Coarse | 1" | 3 1/4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | Coarse | 1" | 3 1/2" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 4 3/4" | Partially Threaded | Coarse | 1" | 3 3/4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 25 | 000000000 | 00000 |
| 5" | Partially Threaded | Coarse | 1" | 4" | 7/8" | 5/16" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 25 | 000000000 | 00000 |
5/8"-11 | ||||||||||||||
| 1 1/2" | Fully Threaded | Coarse | __ | __ | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | Coarse | 1 1/4" | 1/2" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 10 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2" | Partially Threaded | Coarse | 1 1/4" | 3/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | Coarse | 1 1/4" | 1" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | Coarse | 1 1/4" | 1 1/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2 3/4" | Partially Threaded | Coarse | 1 1/4" | 1 1/2" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 3" | Partially Threaded | Coarse | 1 1/4" | 1 3/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 3 1/4" | Partially Threaded | Coarse | 1 1/4" | 2" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | Coarse | 1 1/4" | 2 1/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 3 3/4" | Partially Threaded | Coarse | 1 1/4" | 2 1/2" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 4" | Partially Threaded | Coarse | 1 1/4" | 2 3/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 4 1/4" | Partially Threaded | Coarse | 1 1/4" | 3" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | Coarse | 1 1/4" | 3 1/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5" | Partially Threaded | Coarse | 1 1/4" | 3 3/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5 1/2" | Partially Threaded | Coarse | 1 1/4" | 4 1/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 6" | Partially Threaded | Coarse | 1 1/4" | 4 3/4" | 1 1/16" | 25/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
3/4"-10 | ||||||||||||||
| 1 1/2" | Fully Threaded | Coarse | __ | __ | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 1 3/4" | Fully Threaded | Coarse | __ | __ | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2" | Partially Threaded | Coarse | 1 3/8" | 5/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | Coarse | 1 3/8" | 7/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | Coarse | 1 3/8" | 1 1/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2 3/4" | Partially Threaded | Coarse | 1 3/8" | 1 3/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 3" | Partially Threaded | Coarse | 1 3/8" | 1 5/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3 1/4" | Partially Threaded | Coarse | 1 3/8" | 1 7/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | Coarse | 1 3/8" | 2 1/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3 3/4" | Partially Threaded | Coarse | 1 3/8" | 2 3/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4" | Partially Threaded | Coarse | 1 3/8" | 2 5/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4 1/4" | Partially Threaded | Coarse | 1 3/8" | 2 7/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | Coarse | 1 3/8" | 3 1/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5" | Partially Threaded | Coarse | 1 3/8" | 3 5/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5 1/4" | Partially Threaded | Coarse | 1 3/8" | 3 7/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5 1/2" | Partially Threaded | Coarse | 1 3/8" | 4 1/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 6" | Partially Threaded | Coarse | 1 3/8" | 4 5/8" | 1 1/4" | 15/32" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
7/8"-9 | ||||||||||||||
| 1 3/4" | Fully Threaded | Coarse | __ | __ | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 5 | 000000000 | 00000 | 10 | 000000000 | 00000 |
| 2" | Fully Threaded | Coarse | __ | __ | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | Coarse | 1 1/2" | 1" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 2 3/4" | Partially Threaded | Coarse | 1 1/2" | 1 1/4" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3" | Partially Threaded | Coarse | 1 1/2" | 1 1/2" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | Coarse | 1 1/2" | 2" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 3 3/4" | Partially Threaded | Coarse | 1 1/2" | 2 1/4" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4" | Partially Threaded | Coarse | 1 1/2" | 2 1/2" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4 1/4" | Partially Threaded | Coarse | 1 1/2" | 2 3/4" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | Coarse | 1 1/2" | 3" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 5" | Partially Threaded | Coarse | 1 1/2" | 3 1/2" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
| 6" | Partially Threaded | Coarse | 1 1/2" | 4 1/2" | 1 7/16" | 35/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 10 | 000000000 | 00000 |
1"-8 | ||||||||||||||
| 2" | Fully Threaded | Coarse | __ | __ | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 2 1/4" | Fully Threaded | Coarse | __ | __ | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | Coarse | 1 3/4" | 3/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 2 3/4" | Partially Threaded | Coarse | 1 3/4" | 1" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 3" | Partially Threaded | Coarse | 1 3/4" | 1 1/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 3 1/4" | Partially Threaded | Coarse | 1 3/4" | 1 1/2" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | Coarse | 1 3/4" | 1 3/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 3 3/4" | Partially Threaded | Coarse | 1 3/4" | 2" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 0000 | 5 | 000000000 | 00000 |
| 4" | Partially Threaded | Coarse | 1 3/4" | 2 1/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | Coarse | 1 3/4" | 2 3/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 4 3/4" | Partially Threaded | Coarse | 1 3/4" | 3" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 5" | Partially Threaded | Coarse | 1 3/4" | 3 1/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 5 1/2" | Partially Threaded | Coarse | 1 3/4" | 3 3/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 6" | Partially Threaded | Coarse | 1 3/4" | 4 1/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 5 | 000000000 | 00000 |
| 6 1/2" | Partially Threaded | Coarse | 1 3/4" | 4 3/4" | 1 5/8" | 39/64" | 120,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 5 | 000000000 | 00000 |
1 1/4"-7 | ||||||||||||||
| 3" | Partially Threaded | Coarse | 2" | 1" | 2" | 25/32" | 105,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 4" | Partially Threaded | Coarse | 2" | 2" | 2" | 25/32" | 105,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 5" | Partially Threaded | Coarse | 2" | 3" | 2" | 25/32" | 105,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 1 | 000000000 | 0000 |
| 6" | Partially Threaded | Coarse | 2" | 4" | 2" | 25/32" | 105,000 | ASME B18.2.6, ASTM A325, ASTM F3125 | 1 | 000000000 | 00000 | 1 | 000000000 | 0000 |
Metric High-Strength Steel Heavy Hex Head Screws for Structural Applications
Designed for construction and exterior building applications, these metric screws are often used to join I-beams and scaffolding. Their partial threading leaves an unthreaded portion that is strong enough to stand up to the sideways forces of joints. Made of Class 10.9 steel, these screws are at least 25% stronger than our medium-strength steel heavy hex head screws. They also have a hot-dipped galvanized finish that makes them 10 times more corrosion resistant than zinc plating, so they won't rust in wet environments. However, this finish is thicker than other finishes, so they should be used with DIN 6916 structural washers and DIN 6915 structural hex nuts. All meet ISO 7412 (formerly DIN 6914), an international standard for screw dimensions.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Threading | Thread Spacing | Thread Lg., mm | Grip Lg., mm | Wd., mm | Ht., mm | Tensile Strength, psi | Specifications Met | Each | |
Hot-Dipped Galvanized Class 10.9 Steel | ||||||||||
M12 × 1.75 mm | ||||||||||
| 30 | Partially Threaded | Coarse | 21 | 9 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 35 | Partially Threaded | Coarse | 21 | 14 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 40 | Partially Threaded | Coarse | 21 | 19 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 45 | Partially Threaded | Coarse | 21 | 22 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 50 | Partially Threaded | Coarse | 21 | 27 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 55 | Partially Threaded | Coarse | 21 | 32 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 60 | Partially Threaded | Coarse | 21 | 37 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 65 | Partially Threaded | Coarse | 21 | 42 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 70 | Partially Threaded | Coarse | 21 | 47 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 80 | Partially Threaded | Coarse | 21 | 57 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 90 | Partially Threaded | Coarse | 21 | 67 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 100 | Partially Threaded | Coarse | 21 | 77 | 22 | 7.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
M16 × 2 mm | ||||||||||
| 40 | Partially Threaded | Coarse | 26 | 14 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 45 | Partially Threaded | Coarse | 26 | 19 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 50 | Partially Threaded | Coarse | 26 | 24 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 55 | Partially Threaded | Coarse | 26 | 29 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 60 | Partially Threaded | Coarse | 26 | 34 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 65 | Partially Threaded | Coarse | 26 | 39 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 70 | Partially Threaded | Coarse | 26 | 44 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 75 | Partially Threaded | Coarse | 26 | 47 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 80 | Partially Threaded | Coarse | 26 | 52 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 90 | Partially Threaded | Coarse | 26 | 62 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 0000 |
| 100 | Partially Threaded | Coarse | 26 | 72 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 110 | Partially Threaded | Coarse | 28 | 82 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 120 | Partially Threaded | Coarse | 28 | 92 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 130 | Partially Threaded | Coarse | 28 | 102 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 140 | Partially Threaded | Coarse | 28 | 112 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 150 | Partially Threaded | Coarse | 28 | 122 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 160 | Partially Threaded | Coarse | 28 | 132 | 27 | 10 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
M20 × 2.5 mm | ||||||||||
| 50 | Partially Threaded | Coarse | 31 | 19 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 55 | Partially Threaded | Coarse | 31 | 24 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 60 | Partially Threaded | Coarse | 31 | 29 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 65 | Partially Threaded | Coarse | 31 | 34 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 70 | Partially Threaded | Coarse | 31 | 39 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 75 | Partially Threaded | Coarse | 31 | 44 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 80 | Partially Threaded | Coarse | 31 | 49 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 90 | Partially Threaded | Coarse | 31 | 57 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 100 | Partially Threaded | Coarse | 31 | 67 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 110 | Partially Threaded | Coarse | 33 | 77 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 120 | Partially Threaded | Coarse | 33 | 87 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 130 | Partially Threaded | Coarse | 33 | 97 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 140 | Partially Threaded | Coarse | 33 | 107 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 150 | Partially Threaded | Coarse | 33 | 117 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 160 | Partially Threaded | Coarse | 33 | 127 | 32 | 12.5 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
M22 × 2.5 mm | ||||||||||
| 60 | Partially Threaded | Coarse | 32 | 28 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 65 | Partially Threaded | Coarse | 32 | 33 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 70 | Partially Threaded | Coarse | 32 | 38 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 75 | Partially Threaded | Coarse | 32 | 43 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 80 | Partially Threaded | Coarse | 32 | 48 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 90 | Partially Threaded | Coarse | 32 | 56 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 100 | Partially Threaded | Coarse | 32 | 66 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 110 | Partially Threaded | Coarse | 34 | 76 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 120 | Partially Threaded | Coarse | 34 | 86 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 130 | Partially Threaded | Coarse | 34 | 96 | 36 | 14 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
M24 × 3 mm | ||||||||||
| 60 | Partially Threaded | Coarse | 37 | 21 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 65 | Partially Threaded | Coarse | 37 | 26 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 70 | Partially Threaded | Coarse | 37 | 31 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 75 | Partially Threaded | Coarse | 37 | 36 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 80 | Partially Threaded | Coarse | 37 | 41 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 90 | Partially Threaded | Coarse | 37 | 51 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 100 | Partially Threaded | Coarse | 37 | 61 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 110 | Partially Threaded | Coarse | 39 | 71 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 120 | Partially Threaded | Coarse | 39 | 81 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 130 | Partially Threaded | Coarse | 39 | 91 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 140 | Partially Threaded | Coarse | 39 | 101 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 150 | Partially Threaded | Coarse | 39 | 111 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 160 | Partially Threaded | Coarse | 39 | 121 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 180 | Partially Threaded | Coarse | 39 | 141 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 200 | Partially Threaded | Coarse | 39 | 161 | 41 | 15 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
M27 × 3 mm | ||||||||||
| 70 | Partially Threaded | Coarse | 37 | 33 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 75 | Partially Threaded | Coarse | 37 | 38 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 80 | Partially Threaded | Coarse | 37 | 43 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 90 | Partially Threaded | Coarse | 37 | 53 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 100 | Partially Threaded | Coarse | 37 | 61 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 110 | Partially Threaded | Coarse | 39 | 71 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 120 | Partially Threaded | Coarse | 39 | 81 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 130 | Partially Threaded | Coarse | 39 | 91 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 140 | Partially Threaded | Coarse | 39 | 101 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 150 | Partially Threaded | Coarse | 39 | 111 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 160 | Partially Threaded | Coarse | 39 | 121 | 46 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
M30 × 3.5 mm | ||||||||||
| 75 | Partially Threaded | Coarse | 40 | 35 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 80 | Partially Threaded | Coarse | 40 | 40 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 90 | Partially Threaded | Coarse | 40 | 50 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 100 | Partially Threaded | Coarse | 40 | 58 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 110 | Partially Threaded | Coarse | 42 | 68 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 120 | Partially Threaded | Coarse | 42 | 78 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 130 | Partially Threaded | Coarse | 42 | 88 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 140 | Partially Threaded | Coarse | 42 | 98 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 150 | Partially Threaded | Coarse | 42 | 108 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 160 | Partially Threaded | Coarse | 42 | 118 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 180 | Partially Threaded | Coarse | 42 | 138 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 200 | Partially Threaded | Coarse | 42 | 158 | 50 | 18.7 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |