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.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

Inch

Thread

Lg. Wd. Size Lg. Lg. Tolerance Each

Steel

3/16" 1/4" 8-32 3/16" 0" to 0.015" 8479A13 $4.49

3/16" 5/16" 10-32 1/4" 0" to 0.015" 8479A14 4.75

3/16" 3/8" 1/4"-28 5/16" 0" to 0.015" 8479A15 5.01

1/4" 3/8" 1/4"-20 3/8" -0.003" to 0.012" 8479A111 4.22

1/4" 3/8" 1/4"-28 5/16" 0" to 0.015" 8479A11 2.93

1/4" 1/2" 3/8"-16 1/2" -0.003" to 0.012" 8479A116 4.49

1/4" 1/2" 3/8"-24 7/16" 0" to 0.015" 8479A37 3.27

1/4" 5/8" 1/2"-13 5/8" -0.003" to 0.012" 8479A122 5.03

1/4" 3/4" 5/8"-11 3/4" 0" to 0.012" 8479A127 7.15

3/8" 3/8" 1/4"-20 3/8" -0.003" to 0.012" 8479A112 4.22

3/8" 3/8" 1/4"-28 5/16" 0" to 0.015" 8479A12 2.93

3/8" 1/2" 3/8"-16 1/2" -0.003" to 0.012" 8479A117 4.66

3/8" 1/2" 3/8"-24 7/16" 0" to 0.015" 8479A38 3.27

3/8" 5/8" 1/2"-13 5/8" -0.003" to 0.012" 8479A123 5.14

3/8" 3/4" 5/8"-11 3/4" 0" to 0.012" 8479A128 7.33

1/2" 3/8" 1/4"-20 3/8" -0.003" to 0.012" 8479A113 4.45

1/2" 1/2" 3/8"-16 1/2" -0.003" to 0.012" 8479A118 4.86

1/2" 1/2" 3/8"-24 1/2" 0.005" to 0.015" 8479A4 3.38

1/2" 5/8" 1/2"-13 5/8" -0.003" to 0.012" 8479A124 5.26

1/2" 5/8" 1/2"-20 1/2" 0.005" to 0.015" 8479A7 3.93

1/2" 3/4" 1/2"-20 9/16" 0" to 0.015" 8479A68 3.79

1/2" 3/4" 5/8"-11 3/4" 0" to 0.012" 8479A129 7.50

3/4" 3/8" 1/4"-20 3/8" -0.003" to 0.012" 8479A114 4.49

3/4" 3/8" 1/4"-28 3/8" 0.005" to 0.015" 8479A2 3.19

3/4" 1/2" 3/8"-16 1/2" -0.003" to 0.012" 8479A119 5.14

3/4" 1/2" 3/8"-24 1/2" 0.005" to 0.015" 8479A5 3.54

3/4" 5/8" 1/2"-13 5/8" -0.003" to 0.012" 8479A125 5.69

3/4" 5/8" 1/2"-20 1/2" 0.005" to 0.015" 8479A8 4.24

3/4" 3/4" 5/8"-11 3/4" 0" to 0.012" 8479A131 7.76

1" 3/8" 1/4"-20 3/8" -0.003" to 0.012" 8479A115 4.57

1" 3/8" 1/4"-28 3/8" 0.005" to 0.015" 8479A3 3.30

1" 1/2" 3/8"-16 1/2" -0.003" to 0.012" 8479A121 5.34

1" 1/2" 3/8"-24 1/2" 0.005" to 0.015" 8479A6 3.89

1" 5/8" 1/2"-13 5/8" -0.003" to 0.012" 8479A126 5.78

1" 5/8" 1/2"-20 1/2" 0.005" to 0.015" 8479A9 4.49

1" 3/4" 5/8"-11 3/4" 0" to 0.012" 8479A132 8.11

Metric

Thread

Lg.,

mm Wd.,

mm Size Lg.,

mm Lg. Tolerance,

mm Specifications

Met Each

Steel

10 10 M6 11 -0.2 to 0.2 DIN 6320 3078N11 $3.43

15 13 M8 13 -0.2 to 0.2 DIN 6320 3078N12 4.32

20 17 M10 16 -0.2 to 0.2 DIN 6320 3078N13 6.97

25 19 M12 20 -0.2 to 0.2 DIN 6320 3078N14 10.61

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