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NSN 5306-00-974-7501

Externally Relieved Body Bolt

About this product

1.500 inches fastener length, hexagon head style, 0.312 inches head height, width between flats: 0.687 inches .

Manufacturer part number 421GC121A for national stock number 5306009747501.

Datasheet

  • Product description

    Externally Relieved Body Bolt NSN 5306-00-974-7501.

  • MPN or Model

    421GC121A

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    2a
  • Thread Direction
    Right-hand
  • Thread Length
    0.531 inches
  • Fastener Length
    1.500 inches
  • Head Style
    Hexagon
  • Head Height
    0.312 inches
  • Width Between Flats
    0.687 inches
  • First Diameter From Head
    0.468 inches
  • Second Diameter From Head
    0.375 inches
  • Third Diameter From Head
    0.468 inches
  • Fourth Diameter From Head
    Between 0.284 inches and 0.294 inches
  • Distance From Largest Bearing Surface Of Head To End Of First Diameter
    0.593 inches
  • Distance From Largest Bearing Surface Of Head To End Of Second Diameter
    0.663 inches
  • Distance From Largest Bearing Surface Of Head To End Of Third Diameter
    0.812 inches
  • Distance From Largest Bearing Surface Of Head To End Of Fourth Diameter
    0.968 inches
  • Thread Diameter
    0.375 inches
  • Thready Qty Per Inch (tpi)
    16
  • Min. Tensile Strength (psi)
    100000 pounds per square inch
  • Externally Relieved Body Diameter Quantity
    4
  • Material
    Steel comp 1137 or steel comp 1139 or steel comp 1140 or steel comp 1141
  • Thread Series Designator
    Unc
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Externally Relieved Body Bolt

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

Mechanic Bill explains Externally Relieved Body Bolt

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NSN 5306009747501

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
421GC121A Mack Trucks, Inc.
421GC121 Mack Trucks Inc
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