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NSN 5306-00-761-3251

Externally Relieved Body Bolt

About this product

Between 3.210 inches and 3.230 inches fastener length, hexagon head style, between 0.209 inches and 0.229 inches head height, width between flats: between 0.553 inches and 0.564 inches .

Manufacturer part number 557570 for national stock number 5306007613251.

Datasheet

  • Product description

    Externally Relieved Body Bolt NSN 5306-00-761-3251.

  • MPN or Model

    557570

  • 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 Direction
    Right-hand
  • Thread Length
    0.660 inches
  • Fastener Length
    Between 3.210 inches and 3.230 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.209 inches and 0.229 inches
  • Width Between Flats
    Between 0.553 inches and 0.564 inches
  • First Diameter From Head
    Between 0.373 inches and 0.374 inches
  • Second Diameter From Head
    Between 0.315 inches and 0.325 inches
  • Third Diameter From Head
    Between 0.373 inches and 0.374 inches
  • Distance From Largest Bearing Surface Of Head To End Of First Diameter
    Between 0.540 inches and 0.560 inches
  • Distance From Largest Bearing Surface Of Head To End Of Second Diameter
    Between 2.030 inches and 2.050 inches
  • Distance From Largest Bearing Surface Of Head To End Of Third Diameter
    Between 2.510 inches and 2.570 inches
  • Thread Diameter
    0.375 inches
  • Nonstandard Thread Pitch Diameter
    +0.3420 to 0.3449 inches
  • Thready Qty Per Inch (tpi)
    24
  • Hardness Rating
    30.0 rockwell c and 38.0 rockwell c
  • Externally Relieved Body Diameter Quantity
    3
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Stainless steel
  • Material Specification
    Ams 5616 assn standard single material response
  • Surface Treatment
    Passivate
  • Thread Series Designator
    Unf
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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 5306007613251

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
557570 United Technologies Corporation
557570 Sps Technologies, Llc
557570 Valco Co
557570 United Technologies Corporation
557570 Sps Technologies, Llc
557570 Valco Co
Stock Check
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