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Head Press-Fit Bushings (H)
H Bushings are similar to P bushings, but with a head to resist heavy axial loads. Type H bushings are permanently pressed into the jig plate. H bushings are generally used for single-operation drilling or reaming, when you do not expect to replace bushings during the tooling's lifetime. The head of type H bushings can be left exposed, or recessed by counterboring the installation hole.
Application Information
H bushings are permanently pressed into the jig plate. The head can be left exposed, or recessed by counterboring the installation hole.
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:7/16 to 5/8" +0.0017/+0.0014
Unground OD Tolerance:1/2 to 2-1/4" +0.020/+0.015
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) | F Diameter (Inch) | G (Inch) |
| 19/64-11/32, M-R, 7.50-8.75mm | 9/16" | 1" | 11/16" | 3/32" |
Warning:
This Product Can Expose You To Materials And/Or Chemicals Including Arsenic, Lead, And Other Materials And/Or Chemicals Which Are Known To The State Of California To Cause Cancer And/Or Reproductive Harm. For more information, visit www.P65Warnings.ca.gov