Shoulder Diameter Shoulder Diameter |
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Overall Height Overall Height |
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Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Mating Locating Pins and Hole Liners
Tapered-Head Pin
Round-Head Pin
Diamond-Head Pin
Cone-Head Pin
Hole Liner
Maintain consistent alignment in mating parts by installing a pin in one part and a liner in the other. These components press into place for permanent installation.
For technical drawings and 3-D models, click on a part number.
Pins—Inch
Head | Shank | Shoulder | Tolerance | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. (A) | Ht. (B) | Dia. (C) | Ht. (D) | Dia. | Ht. | O'all Ht. | Head Dia. | Shank Dia. | Shank Ht. | Material | Hardness | Each | |
Tapered Head | |||||||||||||
| 1/4" | 0.375" | 1/4" | 1/2" | 0.280" | 0.032" | 0.907" | -0.0006" to -0.0001" | 0.0013" to 0.0016" | __ | Steel | Rockwell C50 | 000000000 | 00000 |
| 5/16" | 0.407" | 5/16" | 1/2" | 0.344" | 0.032" | 0.939" | -0.0006" to -0.0001" | 0.0013" to 0.0016" | __ | Steel | Rockwell C50 | 000000000 | 0000 |
| 3/8" | 0.500" | 3/8" | 1/2" | 0.407" | 0.032" | 1.030" | -0.0006" to -0.0001" | 0.0013" to 0.0016" | __ | Steel | Rockwell C50 | 000000000 | 0000 |
| 1/2" | 0.562" | 1/2" | 1/2" | 0.532" | 0.032" | 1.090" | -0.0006" to -0.0001" | 0.0014" to 0.0017" | __ | Steel | Rockwell C50 | 000000000 | 0000 |
Round Head | |||||||||||||
| 1/4" | 0.219" | 13/32" | 3/8" | 0.563" | 0.063" | 0.656" | -0.0004" to -0.0001" | 0.0014" to 0.0017" | __ | Steel | Rockwell C50 | 00000000 | 0000 |
| 5/16" | 0.281" | 1/2" | 3/8" | 0.625" | 0.063" | 0.719" | -0.0004" to -0.0001" | 0.0014" to 0.0017" | __ | Steel | Rockwell C50 | 00000000 | 0000 |
| 3/8" | 0.313" | 5/8" | 1/2" | 0.750" | 0.063" | 0.875" | -0.0005" to -0.0002" | 0.0014" to 0.0017" | __ | Steel | Rockwell C50 | 00000000 | 0000 |
| 1/2" | 0.406" | 3/4" | 1/2" | 0.875" | 0.063" | 0.969" | -0.0005" to -0.0002" | 0.0015" to 0.0018" | __ | Steel | Rockwell C50 | 00000000 | 0000 |
| 5/8" | 0.438" | 7/8" | 1/2" | 1.000" | 0.125" | 1.063" | -0.0005" to -0.0002" | 0.0015" to 0.0018" | __ | Steel | Rockwell C50 | 00000000 | 0000 |
| 3/4" | 0.563" | 1" | 3/4" | 1.125" | 0.125" | 1.438" | -0.0005" to -0.0002" | 0.0015" to 0.0018" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
| 1" | 0.750" | 1 3/8" | 3/4" | 1.500" | 0.125" | 1.625" | -0.0005" to -0.0002" | 0.0018" to 0.0021" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
Diamond Head | |||||||||||||
| 1/4" | 0.219" | 13/32" | 3/8" | 0.563" | 0.063" | 0.656" | -0.0004" to -0.0001" | 0.0014" to 0.0017" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
| 5/16" | 0.281" | 1/2" | 3/8" | 0.625" | 0.063" | 0.719" | -0.0004" to -0.0001" | 0.0014" to 0.0017" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
| 3/8" | 0.313" | 5/8" | 1/2" | 0.750" | 0.063" | 0.875" | -0.0005" to -0.0002" | 0.0014" to 0.0017" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
| 1/2" | 0.406" | 3/4" | 1/2" | 0.875" | 0.063" | 0.969" | -0.0005" to -0.0002" | 0.0015" to 0.0018" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
| 5/8" | 0.438" | 7/8" | 1/2" | 1.000" | 0.125" | 1.063" | -0.0005" to -0.0002" | 0.0015" to 0.0018" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
| 3/4" | 0.563" | 1" | 3/4" | 1.125" | 0.125" | 1.438" | -0.0005" to -0.0002" | 0.0015" to 0.0018" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
| 1" | 0.750" | 1 3/8" | 3/4" | 1.500" | 0.125" | 1.625" | -0.0005" to -0.0002" | 0.0018" to 0.0021" | __ | Steel | Rockwell C50 | 00000000 | 00000 |
Cone Head | |||||||||||||
| 7/16" | 0.313" | 1/2" | 3/8" | 0.750" | 0.187" | 0.875" | -0.0045" to 0.0055" | 0.0014" to 0.0017" | -0.015" to 0.015" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
| 11/16" | 0.500" | 3/4" | 9/16" | 1.000" | 0.187" | 1.250" | -0.0165" to -0.0065" | 0.0015" to 0.0018" | -0.015" to 0.015" | Steel | Rockwell C60-C64 | 00000000 | 00000 |
Hole Liners—Inch
Shank | Shoulder | Tolerance | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Pin Head Dia. | ID | Dia. (C) | Ht. (D) | Dia. | Ht. | O'all Ht. | Shank Dia. | Shank Ht. | ID | Material | Hardness | Each | |
For Tapered-Head Pins | |||||||||||||
| 1/4" | 1/4" | 1/2" | 3/8" | 0.625" | 0.094" | 0.469" | 0.0014" to 0.0017" | 0.0014" to 0.0017" | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 000000000 | 00000 |
| 5/16" | 5/16" | 1/2" | 3/8" | 0.625" | 0.094" | 0.469" | 0.0014" to 0.0017" | 0.0014" to 0.0017" | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 000000000 | 0000 |
| 3/8" | 3/8" | 5/8" | 1/2" | 0.750" | 0.094" | 0.594" | 0.0014" to 0.0017" | 0.0014" to 0.0017" | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 000000000 | 0000 |
| 1/2" | 1/2" | 3/4" | 5/8" | 0.875" | 0.094" | 0.719" | 0.0015" to 0.0018" | 0.0015" to 0.0018" | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 000000000 | 0000 |
For Diamond- and Round-Head Pins | |||||||||||||
| 1/4" | 1/4" | 13/32" | 7/16" | 0.563" | 0.063" | 0.500" | 0.0014" to 0.0017" | __ | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
| 5/16" | 5/16" | 1/2" | 7/16" | 0.625" | 0.063" | 0.500" | 0.0014" to 0.0017" | __ | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
| 3/8" | 3/8" | 5/8" | 7/16" | 0.750" | 0.063" | 0.500" | 0.0014" to 0.0017" | __ | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
| 1/2" | 1/2" | 3/4" | 1/2" | 0.875" | 0.063" | 0.562" | 0.0015" to 0.0018" | __ | 0.0001" to 0.0005" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
| 5/8" | 5/8" | 7/8" | 1/2" | 1.000" | 0.125" | 0.625" | 0.0015" to 0.0018" | __ | 0.0002" to 0.0006" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
| 3/4" | 3/4" | 1" | 1/2" | 1.125" | 0.125" | 0.625" | 0.0015" to 0.0018" | __ | 0.0002" to 0.0006" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
| 1" | 1" | 1 3/8" | 11/16" | 1.500" | 0.125" | 0.812" | 0.0018" to 0.0021" | __ | 0.0002" to 0.0006" | Steel | Rockwell C60-C64 | 00000000 | 0000 |
For Cone-Head Pins | |||||||||||||
| 7/16" | 3/8" | 1/2" | 1/4" | 0.750" | 0.250" | 0.500" | 0.0014" to 0.0017" | -0.015" to 0.015" | -0.01" to 0" | Steel | Rockwell C60-C64 | 00000000 | 00000 |
| 11/16" | 5/8" | 3/4" | 3/8" | 1.000" | 0.375" | 0.750" | 0.0015" to 0.0018" | -0.015" to 0.015" | -0.014" to -0.004" | Steel | Rockwell C60-C64 | 00000000 | 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 |
High-Precision Index Plungers
Bushing
To align two parts with more precision than standard spring plungers, these index plungers have a mating bushing that improves alignment and repeatability. Press-fit the bushing into one part, and install the plunger body through a hole in the other part. The plunger has a notch on the side for locking it in place with a set screw (not included). A quarter turn of the handle retracts the plunger.