The shoulder provides a consistent height reference point and keeps the pin from being pressed through the fixture. Install these pins in a plate or table and mate with holes in a workpiece for precise alignment. Press the shank into a drilled hole for permanent installation.
Diamond-head pins make less contact with the inside of a hole than round-head pins to reduce sticking and jamming.
3D CAD models availableFor technical drawings and 3-D models, click on a part number.
Head
Shoulder
Tolerance
Round Head
Diamond Head
Dia. (A) Ht. (B) Shank
Dia. (C) Dia. Ht. O'all Ht. Head Dia. Shank Dia. Hardness Each Each
Steel
1/8" 7/16" 5/16" 5/8" 17/64" 1 3/16" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A23 $13.65 31375A24 $15.77
3/16" 7/16" 5/16" 5/8" 17/64" 1 3/16" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A25 17.19 31375A26 15.77
1/4" 7/16" 5/16" 5/8" 17/64" 1 3/16" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A27 17.19 31375A28 15.77
5/16" 7/16" 5/16" 5/8" 17/64" 1 3/16" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A29 17.19 31375A31 15.77
11/32" 1/2" 1/2" 7/8" 17/64" 1 1/2" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A13 13.66 31375A53 15.43
3/8" 1/2" 1/2" 7/8" 17/64" 1 1/2" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A15 13.66 31375A55 15.43
13/32" 1/2" 1/2" 7/8" 17/64" 1 1/2" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A16 13.66 31375A56 15.43
7/16" 1/2" 1/2" 7/8" 17/64" 1 1/2" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A71 13.67 31375A75 15.46
1/2" 1/2" 1/2" 7/8" 17/64" 1 1/2" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A22 13.66 31375A62 15.43
9/16" 11/16" 3/4" 1 1/8" 17/64" 1 15/16" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A72 25.73 31375A76 28.23
5/8" 11/16" 3/4" 1 1/8" 17/64" 1 15/16" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A37 25.71 31375A38 25.71
3/4" 11/16" 3/4" 1 1/8" 17/64" 1 15/16" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A73 25.73 31375A77 28.23
1" 1" 1" 1 1/2" 17/64" 2 5/8" 0" to 0.0005" 0" to 0.0005" Rockwell C60 31375A74 28.02 31375A78 32.61
