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DFARS Specialty Metals
Export Control Classification Number (ECCN)
Press-Fit Locating and Support Buttons
Support and position workpieces and fixtures from the bottom or side. These buttons press into a drilled hole for permanent installation. Also known as rest buttons.
Stainless steel buttons are a good choice to avoid corrosion when working with stainless steel workpieces or fixtures.
Inch
Stud | Tolerance | ||||||
|---|---|---|---|---|---|---|---|
| Dia. | Lg. | Dia. | Lg. | Lg. | Stud Dia. | Each | |
Steel | |||||||
| 1/4" | 1/8" | 1/8" | 7/32" | 0" to 0.001" | 0.001" to 0.0015" | 0000000 | 00000 |
| 1/4" | 1/4" | 3/16" | 7/32" | 0.01" to 0.015" | 0.0005" to 0.001" | 0000000 | 0000 |
| 3/8" | 1/8" | 1/8" | 7/32" | 0" to 0.001" | 0.001" to 0.0015" | 0000000 | 0000 |
| 3/8" | 1/4" | 3/16" | 7/32" | 0.01" to 0.015" | 0.0005" to 0.001" | 0000000 | 0000 |
| 3/8" | 1/4" | 1/4" | 1/2" | 0" to 0.001" | 0.0005" to 0.001" | 0000000 | 0000 |
| 3/8" | 3/8" | 3/16" | 3/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 3/8" | 1/2" | 3/16" | 3/8" | 0" to 0.005" | 0.0005" to 0.001" | 0000000 | 0000 |
| 1/2" | 1/8" | 1/8" | 7/32" | 0" to 0.001" | 0.001" to 0.0015" | 0000000 | 0000 |
| 1/2" | 1/4" | 1/4" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 1/2" | 3/8" | 1/4" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 1/2" | 1/2" | 1/4" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 5/8" | 1/4" | 3/8" | 15/32" | 0.01" to 0.015" | 0.0005" to 0.001" | 0000000 | 0000 |
| 5/8" | 5/16" | 5/16" | 1/2" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 5/8" | 3/8" | 3/8" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 5/8" | 7/16" | 5/16" | 1/2" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 5/8" | 1/2" | 3/8" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 5/8" | 5/8" | 3/8" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 5/8" | 3/4" | 3/8" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 5/8" | 7/8" | 5/16" | 1/2" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 5/8" | 1" | 3/8" | 1/2" | 0" to 0.005" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 3/4" | 1 1/2" | 1/2" | 1/2" | 0" to 0.01" | 0.0005" to 0.0015" | 0000000 | 0000 |
| 7/8" | 1/4" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 5/16" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 3/8" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 7/16" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 1/2" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 9/16" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 5/8" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 11/16" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 3/4" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 13/16" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 7/8" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 15/16" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 7/8" | 1" | 1/2" | 5/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 1" | 3/8" | 5/8" | 3/4" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 00000 |
| 1" | 1/2" | 5/8" | 3/4" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 1" | 5/8" | 5/8" | 3/4" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 1" | 3/4" | 5/8" | 3/4" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 0000 |
| 1 1/2" | 1/4" | 1" | 1 3/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 00000 |
| 1 1/2" | 1/2" | 1" | 1 3/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 00000 |
| 1 1/2" | 3/4" | 1" | 1 3/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 00000 |
| 1 1/2" | 1" | 1" | 1 3/8" | 0" to 0.001" | -0.0005" to 0" | 00000000 | 00000 |
Stainless Steel  | |||||||
| 3/8" | 1/4" | 3/16" | 1/4" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
| 3/8" | 3/8" | 3/16" | 1/4" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
| 3/8" | 1/2" | 3/16" | 1/4" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
| 1/2" | 1/4" | 1/4" | 5/16" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
| 1/2" | 3/8" | 1/4" | 5/16" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
| 1/2" | 1/2" | 5/16" | 5/16" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
| 1/2" | 3/4" | 5/16" | 5/16" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
| 1/2" | 1" | 5/16" | 5/16" | 0" to 0.001" | -0.015" to 0" | 00000000 | 0000 |
Threaded Locating and Support Buttons
Use these buttons to support and position workpieces and fixtures from the bottom or side. Their hex shape lets you screw them into a threaded hole with a wrench or socket. Threading makes these buttons easier to replace than press-fit, so they are a good choice for high-wear applications. They’re also known as rest buttons.
Hardened steel buttons are stronger and resist wear better than steel buttons. They are precision ground, which helps them maintain their shape and size, even with repeated use. This makes them a good choice for use in modular fixtures where repeatability and exact positioning are important.
Buttons with a domed head support rounded or irregularly shaped workpieces with minimal contact.
Inch
Thread | ||||||
|---|---|---|---|---|---|---|
| Lg. | Wd. | Size | Lg. | Lg. Tolerance | Each | |
Steel with Flat Head | ||||||
| 3/16" | 1/4" | 8-32 | 3/16" | 0" to 0.015" | 0000000 | 00000 |
| 3/16" | 5/16" | 10-32 | 1/4" | 0" to 0.015" | 0000000 | 0000 |
| 3/16" | 3/8" | 1/4"-28 | 5/16" | 0" to 0.015" | 0000000 | 0000 |
| 1/4" | 3/8" | 1/4"-20 | 3/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 1/4" | 3/8" | 1/4"-28 | 5/16" | 0" to 0.015" | 0000000 | 0000 |
| 1/4" | 1/2" | 3/8"-16 | 1/2" | -0.003" to 0.012" | 00000000 | 0000 |
| 1/4" | 1/2" | 3/8"-24 | 7/16" | 0" to 0.015" | 0000000 | 0000 |
| 1/4" | 5/8" | 1/2"-13 | 5/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 1/4" | 3/4" | 5/8"-11 | 3/4" | 0" to 0.012" | 00000000 | 0000 |
| 3/8" | 3/8" | 1/4"-20 | 3/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 3/8" | 3/8" | 1/4"-28 | 5/16" | 0" to 0.015" | 0000000 | 0000 |
| 3/8" | 1/2" | 3/8"-16 | 1/2" | -0.003" to 0.012" | 00000000 | 0000 |
| 3/8" | 1/2" | 3/8"-24 | 7/16" | 0" to 0.015" | 0000000 | 0000 |
| 3/8" | 5/8" | 1/2"-13 | 5/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 3/8" | 3/4" | 5/8"-11 | 3/4" | 0" to 0.012" | 00000000 | 0000 |
| 1/2" | 3/8" | 1/4"-20 | 3/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 1/2" | 1/2" | 3/8"-16 | 1/2" | -0.003" to 0.012" | 00000000 | 0000 |
| 1/2" | 1/2" | 3/8"-24 | 1/2" | 0.005" to 0.015" | 000000 | 0000 |
| 1/2" | 5/8" | 1/2"-13 | 5/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 1/2" | 5/8" | 1/2"-20 | 1/2" | 0.005" to 0.015" | 000000 | 0000 |
| 1/2" | 3/4" | 1/2"-20 | 9/16" | 0" to 0.015" | 0000000 | 0000 |
| 1/2" | 3/4" | 5/8"-11 | 3/4" | 0" to 0.012" | 00000000 | 0000 |
| 3/4" | 3/8" | 1/4"-20 | 3/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 3/4" | 3/8" | 1/4"-28 | 3/8" | 0.005" to 0.015" | 000000 | 0000 |
| 3/4" | 1/2" | 3/8"-16 | 1/2" | -0.003" to 0.012" | 00000000 | 0000 |
| 3/4" | 1/2" | 3/8"-24 | 1/2" | 0.005" to 0.015" | 000000 | 0000 |
| 3/4" | 5/8" | 1/2"-13 | 5/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 3/4" | 5/8" | 1/2"-20 | 1/2" | 0.005" to 0.015" | 000000 | 0000 |
| 3/4" | 3/4" | 5/8"-11 | 3/4" | 0" to 0.012" | 00000000 | 0000 |
| 1" | 3/8" | 1/4"-20 | 3/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 1" | 3/8" | 1/4"-28 | 3/8" | 0.005" to 0.015" | 000000 | 0000 |
| 1" | 1/2" | 3/8"-16 | 1/2" | -0.003" to 0.012" | 00000000 | 0000 |
| 1" | 1/2" | 3/8"-24 | 1/2" | 0.005" to 0.015" | 000000 | 0000 |
| 1" | 5/8" | 1/2"-13 | 5/8" | -0.003" to 0.012" | 00000000 | 0000 |
| 1" | 5/8" | 1/2"-20 | 1/2" | 0.005" to 0.015" | 000000 | 0000 |
| 1" | 3/4" | 5/8"-11 | 3/4" | 0" to 0.012" | 00000000 | 0000 |
Metric
With Flat Head
With Domed Head
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg., mm | Wd., mm | Size | Pitch, mm | Lg., mm | Lg. Tolerance, mm | Specifications Met | Each | |
Steel with Flat Head | ||||||||
| 10 | 10 | M6 | 1 | 11 | -0.2 to 0.2 | DIN 6320 | 0000000 | 00000 |
| 15 | 13 | M8 | 1.25 | 13 | -0.2 to 0.2 | DIN 6320 | 0000000 | 0000 |
| 20 | 17 | M10 | 1.5 | 16 | -0.2 to 0.2 | DIN 6320 | 0000000 | 0000 |
| 25 | 19 | M12 | 1.75 | 20 | -0.2 to 0.2 | DIN 6320 | 0000000 | 0000 |
Hardened Steel with Flat Head | ||||||||
| 10 | 17 | M8 | 1.25 | 10 | -0.01 to 0.01 | __ | 0000000 | 00000 |
| 10 | 19 | M10 | 1.5 | 12 | -0.01 to 0.01 | __ | 0000000 | 00000 |
| 10 | 22 | M12 | 1.75 | 14 | -0.01 to 0.01 | __ | 0000000 | 00000 |
Hardened Steel with Domed Head | ||||||||
| 10 | 17 | M8 | 1.25 | 10 | -0.1 to 0.1 | __ | 0000000 | 00000 |
| 10 | 19 | M10 | 1.5 | 12 | -0.1 to 0.1 | __ | 0000000 | 00000 |
| 10 | 22 | M12 | 1.75 | 14 | -0.1 to 0.1 | __ | 0000000 | 00000 |