Model: HM025-677-1
Spur GearSpecial Features:
Heat treat to rc 31-36 per mil-h-687 (140-160 ksi tensile strength); spur gear data: diametral pitch=9, addendum=0.1111, root dia.=1.944, max. Tooth thk.=0.17253, meas. Over pins=2.4832, pindia.=0.192, testing pressure(oz.)=33-39, center distance radius=1.1043, max. Tooth-tooth composite error=0.00161, max.Total composite error=0.00425, no. Of teeth(mating gear) =40, nom. Center distance=3.333; spline data: base dia.=0.50518, class of fit=5, spline pitch=24/48, pin dia.=0.072, dia. Between pins=0.4826, form dia. Min.=0.629, tooth form=flatroot side fit involute per ansi b92.1-1970
Properties:
A gear, cylindrical in form, with straight teeth on the outer surface parallel to the axis of the gear. See also gear, antibacklash, spur. For bulk material, see rod, pinion.
Part HM025-677-1 NSN 3020-01-238-8339
Material Classification
Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicatorsPackaging & Shipping
Freight Classification
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Schedule B and Export
- Schedule B: 8483409000
- SITC: 74840
- End Use: Industrial machines, other
- NAICS: 333612
- USDA: 1
Freight Class: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately
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