About Shoulder Screws
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Short-Thread Alloy Steel Shoulder Screws
Use these screws in thin materials; they have a shorter threaded portion than our standard shoulder screws. They’re comparable in strength to Grade 8 steel. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. Also known as stripper bolts, they're commonly used in punch and die assemblies, and as an axle or pivot point.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Finish | Tensile Strength, psi | Drive Size | 1-4 | 5-Up | |
5/16" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/4" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 00000 | 00000 |
| 5/16" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 7/16" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 9/16" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 5/8" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 11/16" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 13/16" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 7/8" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 15/16" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1 1/8" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1 3/8" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1 1/2" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1 5/8" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1 3/4" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 1 7/8" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
| 2" | 1/4"-28 | 11/64" | 7/16" | 7/32" | Black Oxide | 140,000 | 5/32" | 000000000 | 0000 | 0000 |
18-8 Stainless Steel Shoulder Screws
Made from 18-8 stainless steel, these shoulder screws have good chemical resistance and may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.
Black-oxide stainless steel screws have a matte-black finish.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Tensile Strength, psi | Drive Size | Specifications Met | 1-4 | 5-Up | |
5/16" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/8" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 1/4" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 5/16" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 1/2" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 3/4" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 2" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 2 1/2" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Tensile Strength, psi | Drive Size | Specifications Met | 1-4 | 5-Up | |
5/16" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/4" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 5/16" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 5/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
Same-Size Thread 18-8 Stainless Steel Shoulder Screws
With threads the same diameter as the shoulder, these screws can handle heavy loads. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.
Black-oxide stainless steel screws have a matte-black finish.
For technical drawings and 3-D models, click on a part number.
Each | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Tensile Strength, psi | Drive Size | 1-4 | 5-Up | |
Uncoated | |||||||||
1/4" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | |||||||||
| 1/8" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 00000 | 00000 |
| 1/4" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 5/16" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 5/8" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 1 1/2" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 2" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 00000 | 0000 |
Black Oxide | |||||||||
1/4" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | |||||||||
| 1/4" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 5/16" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 5/8" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | 000000000 | 0000 | 0000 |
316 Stainless Steel Shoulder Screws
More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water. They may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.
Black-oxide stainless steel screws have a matte-black finish.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Tensile Strength, psi | Drive Size | Specifications Met | 1-4 | 5-Up | |
5/16" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/8" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 1/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 5/16" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 1/2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 3/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 2 1/2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 3" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 000000000 | 00000 | 00000 |
3/8" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/8" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/16" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 5/16" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 1/2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 1 3/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 00000 | 0000 |
| 2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 0000 | 0000 |
| 2 1/2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 3" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 000000000 | 00000 | 00000 |
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Tensile Strength, psi | Drive Size | Specifications Met | 1-4 | 5-Up | |
5/16" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/8" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 00000 | 00000 |
| 1/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 5/16" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1 1/2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1 3/4" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 00000 | 00000 |
| 2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 00000 | 00000 |
| 2 1/2" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 00000 | 00000 |
| 3" | 1/4"-28 | 7/16" | 7/16" | 7/32" | 70,000 | 5/32" | ASME B18.3 | 00000000 | 00000 | 00000 |
3/8" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/8" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 3/16" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 5/16" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 3/8" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1/2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 3/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1 1/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1 1/2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 0000 | 0000 |
| 1 3/4" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 00000 | 0000 |
| 2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 00000 | 0000 |
| 2 1/2" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 00000 | 00000 |
| 3" | 1/4"-28 | 3/8" | 9/16" | 1/4" | 70,000 | 3/16" | ASME B18.3 | 00000000 | 00000 | 00000 |
Eyebolts—For Lifting
Zinc-plated steel eyebolts offer good corrosion resistance.
Note: Capacities listed are for vertical lifting only. Eyebolts with shoulder can be used for angular lifting up to 45°, but the capacities will be significantly reduced. For angular lifting, we recommend Hoist Rings.
Warning: Never use to lift people or items over people.
For technical drawings and 3-D models, click on a part number.