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NSN 5306-01-303-3902

Externally Relieved Body Bolt

About this product

Countersunk hole at the end of threads,0.095 in. Min,0.155 in. Max dia; groove,0.580 in. Lg from end,1.030 in. Min,1.040 in. Max dia.

Manufacturer part number 74D291033-2025 for national stock number 5306013033902.

Datasheet

  • Product description

    Externally Relieved Body Bolt NSN 5306-01-303-3902.

  • MPN or Model

    74D291033-2025

  • 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)
  • Unit Weight (Est.)
    0.9 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    1.720 inches
  • Fastener Length
    3.900 inches
  • Head Style
    Pan
  • Head Diameter
    1.000 inches
  • Head Height
    0.470 inches
  • Hole Diameter
    0.270 inches
  • Shank Unthreaded Hole Diameter
    0.250 inches first hole and 0.256 inches first hole
  • First Diameter From Head
    0.470 inches
  • Second Diameter From Head
    Between 1.015 inches and 1.025 inches
  • Third Diameter From Head
    Between 1.045 inches and 1.055 inches
  • Fourth Diameter From Head
    Between 1.020 inches and 1.030 inches
  • Distance From Largest Bearing Surface Of Head To End Of First Diameter
    0.400 inches
  • Distance From Largest Bearing Surface Of Head To End Of Second Diameter
    0.980 inches
  • Distance From Largest Bearing Surface Of Head To End Of Third Diameter
    1.455 inches
  • Distance From Largest Bearing Surface Of Head To End Of Fourth Diameter
    1.580 inches
  • Thread Diameter
    1.125 inches
  • Hole Quantity
    1
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    20
  • Hole Configuration Style
    Round longitudinal hole
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.200 inches first hole
  • Externally Relieved Body Diameter Quantity
    4
  • Material
    Steel comp xm-13
  • Material Specification
    Ams 5629 assn standard single material response
  • Thread Series Designator
    Un
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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 5306013033902

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
74D291033-2025 Boeing Company, The
74D291033-2009 Boeing Company, The
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