SP
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FEATURES: Similar to a P bushing, 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. Finish-ground OD ensures accurate ID location. Serrations also resist axial force to prevent pushing the bushing through the jig plate.
STANDARD SIZES: See Dimensions page for part numbers and standard ID drill sizes. The prices shown apply to standard bushings only, with any standard USA or metric ID size within the stated range. | | SP-20-12-.1250 | | Standard bushing, 1/8" ID | | | SP-20-12-.1772 | | Standard bushing,
4.50mm ID (.1772") |
STANDARD ID TOLERANCE:| | From #80 to 1/4" | | | | +.0001/+.0004 | | | Over 1/4 to 3/4" | | | | +.0001/+.0005 | | | Over 3/4 to 1-1/2" | | | | +.0002/+.0006 |
REAMER ID TOLERANCE: Reamer bushings have a different tolerance range than drill bushings:| | From #80 to 1/4" | | | | +.0005/+.0008 | | | Over 1/4 to 3/4" | | | | +.0006/+.0010 | | | Over 3/4 to 1-1/2" | | | | +.0008/+.0012 |
To order bushings with a reamer tolerance, add "-REAMER" to the part number:| | SP-20-12-.1250-REAMER (Special) |
MATERIAL: 1144 Stressproof steel, heat treated to achieve Rc 62-64 ID hardness. Other materials readily available by special order (see Specials). |
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