Description
Serrated Press-Fit Bushings (SP)
Bushings are similar to P bushings, but with top serrations to prevent rotation in soft materials. SP bushings are recommended in high-torque situations for materials such as magnesium, aluminum, masonite, or wood. Serrations also resist axial force to prevent pushing the bushing through the jig plate.
Application Information
SP bushings have top serrations to prevent rotation in softer materials, such as magnesium, aluminum, masonite, or wood. Finish-ground OD ensures accurate ID location.
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 to 2-3/4″ +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:
13/64 to 1″ 0/-0.0002
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) |
| 1/16-3/32, #55-#39, 1.35-2.50mm | 13/64″ | 1/4″ |
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