Description
Press-Fit Bushings (P)
P style drill bushings are the most-popular and least-expensive type of drill bushing. Type P bushings are permanently pressed into the jig plate, usually flush with the top surface. P style drill bushings are generally used for single-operation drilling or reaming, when you do not expect to replace bushings during the tooling’s lifetime. Type P bushings can be mounted closer together than headed bushings, but offer less resistance to heavy axial loads.
Application Information
P bushings are permanently pressed into the jig plate, usually flush with the top surface.
ID Tolerance
Standard ID Tolerance:
From #80 to 1/4 +0.0001/+0.0004
Over 1/4 to 3/4 +0.0001/+0.0005
Over 3/4 to 1-1/2 +0.0002/+0.0006
Over 1-1/2 and up +0.0003/+0.0007
Reamer ID Tolerance (Special):
From #80 to 1/4 +0.0005/+0.0008
Over 1/4 to 3/4 +0.0006/+0.0010
Over 3/4 to 1-1/2 +0.0008/+0.0012
OD Tolerance
Standard OD Tolerance:
1/4 to 13/32 +0.0016/+0.0013
Unground OD Tolerance:
1/4 to 7/16 +0.015/+0.010
No-Counterbore Option on Long Bushings
Extremely long bushings with a small ID size are counterbored according to ANSI standards for proper drill-bearing length to eliminate binding and heat buildup. Add “-NCB” for applications that require these bushings without a counterbore.
Material
| Material | Heat Treat | Finish | DFARS | RoHS |
| 1144 Stressproof steel | Heat Treated to achieve Rc 62-64 ID Hardness | Yes | Yes |
Parts Specification
| Standard Drill Sizes (mm) | OD (Inch) | Length (Inch) |
| 7/64-9/64, #40-#28, 2.50-3.50mm | 1/4 | 1-3/4 |
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