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18-8 Stainless Steel Socket Head Screws
Fully Threaded
Partially Threaded
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.Silver-plated stainless steel screws have mild lubricity so they thread smoothly.
Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
Screws that meet ASME B1.1, ASME B18.3, ISO 21269, and ISO 4762 (formerly DIN 912) comply with standards for dimensions. Screws that meet ASTM B456 and ASTM F837 comply with standards for materials.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
0-80 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 1 1/8" | Partially Threaded | 1/2" | Fine | 0.096" | 0.06" | 0.050" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 000000 |
| 1 1/4" | Partially Threaded | 1/2" | Fine | 0.096" | 0.06" | 0.050" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 1/2" | Fine | 0.096" | 0.06" | 0.050" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
2-56 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 1/16" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 000000 |
| 3/32" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 9/32" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B1.1, ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 5/8" | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
| 2" | Partially Threaded | 5/8" | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
Silver-Plated 18-8 Stainless Steel | |||||||||||
| 1/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/16" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1/4" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
3-48 | ||||||||||
18-8 Stainless Steel | ||||||||||
| 1/8" | Fully Threaded | Coarse | 0.161" | 0.099" | 5/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 000000 |
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
4-40 | ||||||||||
18-8 Stainless Steel | ||||||||||
| 1/16" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 000000 |
| 3/32" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 9/32" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B1.1, ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 11/16" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B1.1, ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
Silver-Plated 18-8 Stainless Steel | ||||||||||
| 1/4" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/8" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1/2" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 5/8" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 0.183" | 0.112" | 3/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
6-32 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 3/32" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
| 1/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 25 | 000000000 | 00000 |
| 5/32" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 0000 |
| 3/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 50 | 000000000 | 00000 |
| 9/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 50 | 000000000 | 00000 |
| 11/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B1.1, ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 3/4" | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
| 4" | Partially Threaded | 3/4" | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
Silver-Plated 18-8 Stainless Steel | |||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1" | Partially Threaded | 3/4" | Coarse | 0.226" | 0.138" | 7/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
8-32 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 9/16" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 50 | 000000000 | 000000 |
| 11/16" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B1.1, ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 7/8" | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 25 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 1/8" | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/8" | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | 3/4" | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
| 5" | Partially Threaded | 3/4" | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
Silver-Plated 18-8 Stainless Steel | |||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1" | Partially Threaded | 3/4" | Coarse | 0.27" | 0.164" | 9/64" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
10-24 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 3/16" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 000000 |
| 2 1/4" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 10 | 000000000 | 0000 |
| 2 3/4" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/8" | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1 1/8" | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 0000 |
| 4" | Partially Threaded | 1 1/8" | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 0000 |
Silver-Plated 18-8 Stainless Steel | |||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
10-32 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 5/32" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 000000 |
| 9/16" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 25 | 000000000 | 00000 |
| 1 1/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 25 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 10 | 000000000 | 0000 |
| 2 3/4" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 1/8" | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 10 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1 1/8" | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 7" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
Silver-Plated 18-8 Stainless Steel | |||||||||||
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 1" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
1/4"-20 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 3/16" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
Silver-Plated 18-8 Stainless Steel | |||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 1 1/4" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 3/16" | 70,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 |
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
5/16"-18 | ||||||||||
18-8 Stainless Steel | ||||||||||
| 1/4" | Fully Threaded | Coarse | 15/32" | 5/16" | 1/4" | 70,000 | ASME B18.3, ASTM F837 | 10 | 000000000 | 000000 |
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
7/16"-14 | |||||||||||
18-8 Stainless Steel | |||||||||||
| 2 1/2" | Partially Threaded | 1 3/8" | Coarse | 21/32" | 7/16" | 3/8" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 3/8" | Coarse | 21/32" | 7/16" | 3/8" | 70,000 | ASME B18.3, ASTM F837 | 1 | 000000000 | 00000 |
Stainless Steel Wire-Lockable Socket Head Screws
Fully Threaded
Partially Threaded
Screws are 18-8 stainless steel for good chemical resistance. They may be mildly magnetic. For more vibration resistance than any other socket head screw, wire these screws together through the hole in the head (wire sold separately). All screws meet ASME B18.3 and ASTM F837 for dimensional standards and material quality. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Screws | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Head | Stainless Steel Wire | |||||||||||||
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Hole Dia. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | Each | ||
18-8 Stainless Steel | ||||||||||||||
2-56 | ||||||||||||||
| 1/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 000000 | 0000000 | 000000 |
| 3/16" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 9/64" | 0.086" | 0.031" | 5/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
4-40 | ||||||||||||||
| 1/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.036" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/16" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.036" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/16" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.036" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.183" | 0.112" | 0.035" | 3/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
6-32 | ||||||||||||||
| 3/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 1/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/16" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.035" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 0.036" | 7/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
8-32 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.047" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.035" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.035" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.035" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 0.047" | 9/64" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
10-24 | ||||||||||||||
| 3/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
10-32 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/4" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/2" | Partially Threaded | 1 1/8" | Fine | 5/16" | 0.19" | 0.047" | 5/32" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
1/4"-20 | ||||||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 5/16" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1" | Coarse | 3/8" | 1/4" | 0.047" | 3/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
5/16"-18 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 0000 | 0000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 0.047" | 1/4" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 00000 |
3/8"-16 | ||||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 3/4" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 2" | Partially Threaded | 1 1/2" | Coarse | 9/16" | 3/8" | 0.064" | 5/16" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
1/2"-13 | ||||||||||||||
| 1" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 1/2" | 0.064" | 3/8" | 80,000 | ASME B18.3, ASTM F837 | 5 | 000000000 | 00000 | 0000000 | 0000 |
Stainless Steel Socket Head Screws with Split Lock Washer
Screws are 18-8 stainless steel for good chemical resistance. They may be mildly magnetic. Also known as Sems screws, they have a permanently attached but freely rotating split lock washer that adds tension to resist loosening from vibration. All screws meet ASTM F837 specifications and testing requirements for material quality. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Dia. | Ht. | Washer Thick. | Drive Size | Tensile Strength, psi | Specifications Met | Each | |
18-8 Stainless Steel | ||||||||||
6-32 | ||||||||||
| 1/4" | Fully Threaded | Coarse | 0.226" | 0.138" | 0.04" | 7/64" | 70,000 | ASTM F837 | 000000000 | 00000 |
| 3/8" | Fully Threaded | Coarse | 0.226" | 0.138" | 0.04" | 7/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 1/2" | Fully Threaded | Coarse | 0.226" | 0.138" | 0.04" | 7/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 0.226" | 0.138" | 0.04" | 7/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
8-32 | ||||||||||
| 3/8" | Fully Threaded | Coarse | 0.27" | 0.164" | 3/64" | 9/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 1/2" | Fully Threaded | Coarse | 0.27" | 0.164" | 3/64" | 9/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 5/8" | Fully Threaded | Coarse | 0.27" | 0.164" | 3/64" | 9/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 0.27" | 0.164" | 3/64" | 9/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 0.27" | 0.164" | 3/64" | 9/64" | 70,000 | ASTM F837 | 000000000 | 0000 |
10-32 | ||||||||||
| 1/2" | Fully Threaded | Fine | 5/16" | 0.19" | 3/64" | 5/32" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 5/8" | Fully Threaded | Fine | 5/16" | 0.19" | 3/64" | 5/32" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Fine | 5/16" | 0.19" | 3/64" | 5/32" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 1" | Fully Threaded | Fine | 5/16" | 0.19" | 3/64" | 5/32" | 70,000 | ASTM F837 | 000000000 | 0000 |
1/4"-20 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 1/4" | 1/16" | 3/16" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 5/8" | Fully Threaded | Coarse | 3/8" | 1/4" | 1/16" | 3/16" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 1/4" | 1/16" | 3/16" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 3/8" | 1/4" | 1/16" | 3/16" | 70,000 | ASTM F837 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 3/8" | 1/4" | 1/16" | 3/16" | 70,000 | ASTM F837 | 000000000 | 0000 |