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About Shoulder Screws
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Nickel Alloy Shoulder Screws
Nickel alloy shoulder screws are more resistant to acids and salt water than stainless steel shoulder screws. 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.
Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg. | Thread Size | Thread Lg. | Head Dia. | Head Ht. | Tensile Strength, psi | Drive Size | Specifications Met | 1-4 | 5-Up | |
1/8" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/8" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | __ | 000000000 | 000000 | 000000 |
| 3/16" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | __ | 000000000 | 00000 | 00000 |
| 1/4" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | __ | 000000000 | 00000 | 00000 |
| 5/16" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | __ | 000000000 | 00000 | 00000 |
| 3/8" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | __ | 000000000 | 00000 | 00000 |
| 1/2" | 4-40 | 5/32" | 1/4" | 1/8" | 70,000 | 5/64" | __ | 000000000 | 00000 | 00000 |
3/16" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/8" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
| 3/16" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
| 1/4" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
| 5/16" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
| 3/8" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
| 1/2" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
| 3/4" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
| 1" | 8-32 | 3/16" | 5/16" | 5/32" | 70,000 | 3/32" | __ | 000000000 | 00000 | 00000 |
1/4" Shoulder Dia.—Standard Fit (-0.004" to -0.002" Dia. Tolerance) | ||||||||||
| 1/4" | 10-24 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 3/8" | 10-24 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 1/2" | 10-24 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 3/4" | 10-24 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | ASME B18.3 | 000000000 | 00000 | 00000 |
| 1" | 10-24 | 3/8" | 3/8" | 3/16" | 70,000 | 1/8" | ASME B18.3 | 000000000 | 00000 | 00000 |