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Through-Hole Alignment Pins
L Style
Precisely align drilled holes in two parts.
L Style—Inch
Handle | |||||||
|---|---|---|---|---|---|---|---|
| Pin Dia. | Lg. | Dia. | Lg. | Pin Dia. Tolerance | Hardness | Each | |
Steel | |||||||
| 1/8" | 2 1/2" | 1/4" | 1 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
| 5/32" | 3 1/2" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 3/16" | 2 1/2" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 3/16" | 3" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 3/16" | 4" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 3/16" | 6" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 0.1895" | 2 1/2" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 0.191" | 3" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 0.1925" | 3" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 0.196" | 3" | 5/16" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 0.2485" | 5" | 3/8" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 1/4" | 3" | 3/8" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 1/4" | 4" | 3/8" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 1/4" | 6" | 3/8" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 0.257" | 3" | 3/8" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 0.275" | 4" | 3/8" | 2 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 5/16" | 2" | 7/16" | 3" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 5/16" | 3 1/2" | 7/16" | 3" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 5/16" | 4" | 7/16" | 3" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 5/16" | 6" | 7/16" | 3" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 3/8" | 3" | 1/2" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 3/8" | 4" | 1/2" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 3/8" | 6" | 1/2" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 7/16" | 4" | 9/16" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 7/16" | 6" | 9/16" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 1/2" | 4" | 5/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 1/2" | 6" | 5/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 0000 |
| 1/2" | 9" | 5/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
| 9/16" | 4" | 5/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
| 9/16" | 6" | 5/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
| 5/8" | 6" | 7/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
| 5/8" | 8" | 7/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
| 3/4" | 6" | 7/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
| 3/4" | 8" | 7/8" | 3 1/2" | -0.0005" to 0" | Rockwell C58 | 000000000 | 00000 |
L Style—Metric
Handle | |||||||
|---|---|---|---|---|---|---|---|
| Pin Dia., mm | Lg., mm | Dia., mm | Lg., mm | Pin Dia. Tolerance, mm | Hardness | Each | |
Steel | |||||||
| 4 | 88 | 8 | 64 | -0.0005 to 0 | Rockwell C40 | 0000000 | 000000 |
| 5 | 76 | 8 | 64 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 5 | 152 | 8 | 64 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 6 | 76 | 10 | 64 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 6 | 152 | 10 | 64 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 8 | 88 | 11 | 76 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 8 | 152 | 11 | 76 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 10 | 76 | 13 | 64 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 10 | 152 | 13 | 88 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 12 | 102 | 16 | 88 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 12 | 152 | 16 | 88 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 16 | 152 | 22 | 88 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 16 | 204 | 22 | 88 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 20 | 152 | 22 | 88 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
| 20 | 204 | 22 | 88 | -0.0005 to 0 | Rockwell C40 | 0000000 | 00000 |
Slotted Bushings
When locating a workpiece using through-hole alignment pins (sold separately), use one of these bushings and one standard bushing to prevent the pins from binding in your fixture. One pin sits in the standard drill bushing for tight-tolerance locating in all directions, and the other pin sits in the slotted bushing for tight-tolerance locating in only one direction. This functionality is similar to the combination of round and diamond-head locating pins. Press these bushings into a drilled hole for permanent installation. They’re also known as slotted locator bushings.
Slot | Tolerance | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| For Pin Dia. | Ht | Wd. | Lg. | OD | Slot Ht. | OD | Hardness | Each | |
Steel | |||||||||
| 1/8" | 1/8" | 1/4" | 1/2" | 3/8" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 000000 |
| 3/16" | 3/16" | 3/8" | 1/2" | 1/2" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 0.1925" | 0.1935" | 3/8" | 1/2" | 1/2" | 0.0001" to 0.0006" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 1/4" | 1/4" | 3/8" | 1/2" | 3/4" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 0.257" | 0.257" | 3/8" | 1/2" | 3/4" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 5/16" | 5/16" | 7/16" | 1/2" | 3/4" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 3/8" | 3/8" | 1/2" | 1/2" | 1" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 1/2" | 1/2" | 5/8" | 1/2" | 1" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 5/8" | 5/8" | 3/4" | 1" | 1 1/4" | 0.0001" to 0.0007" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 00000 |
| 3/4" | 3/4" | 7/8" | 1" | 1 1/2" | 0.0001" to 0.001" | 0.0001" to 0.0004" | Rockwell C57 | 0000000 | 000000 |