U S Army Tank Automotive Command

NOS Military Spec Spur Gear NSN:3020-00-905-7551 Model:8356397

Regular price $259.99

Spur Gear

NSN: 3020-00-905-7551 | Model: 8356397
ITAR Registered seal

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.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled
Body Style
Webbed, offset, solid
Attachment Method
Mounting hole
Pitch Diameter
8.1250 inches
Teeth Quantity
Bore Style
W/counterbore both ends
Mounting Hole Thread Series Designator
Unf axially through hub, first end
Mounting Hole Thready Qty Per Inch (tpi)
24 axially through hub, first end
Hardness Rating
85.0 Rockwell superficial 15-N teeth
Mounting Hole Thread Size
0.312 inches transversely through hub, first end
Mounting Hole Type And Quantity
8 threaded axially through hub, first end
Outside Diameter
8.358 inches
Tooth Form
Pressure Angle
25.0000 degrees
Distance Between Body Face And Protruding Hub End
0.762 inches first end
Body Recess Depth
0.203 inches first end
Face Width
0.380 inches
Bore Diameter
3.938 inches both ends
Counterbore Depth
0.706 inches first end
Counterbore Diameter
4.330 inches first end
Hub Style Designator
Plain first end
Hub Diameter
5.502 inches first end
Bolt Hole Circle Diameter
4.920 inches axially through hub, first end
Steel comp 4140
Material Specification
66 federal standard single material response and aisi/sae 4140 assn standard single material response
Style Designator
Protruding hub, recessed body

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