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NSN 5306-00-131-2599

Externally Relieved Body Bolt

About this product

Thd point flatted to 0.260 in. W by 0.160 in. Lg,top of head partially beveled to 30.0 deg.

Manufacturer part number 78027 for national stock number 5306001312599.

Datasheet

  • Product description

    Externally Relieved Body Bolt NSN 5306-00-131-2599.

  • MPN or Model

    78027

  • 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
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.560 inches
  • Fastener Length
    2.270 inches
  • Head Style
    Dee
  • Head Diameter
    Between 0.620 inches and 0.630 inches
  • Head Height
    0.190 inches
  • Distance From Centerline To Flat
    Between 0.240 inches and 0.250 inches
  • First Diameter From Head
    Between 0.316 inches and 0.321 inches
  • Second Diameter From Head
    Between 0.3805 inches and 0.3810 inches
  • Third Diameter From Head
    Between 0.3695 inches and 0.3735 inches
  • Distance From Largest Bearing Surface Of Head To End Of First Diameter
    0.630 inches
  • Distance From Largest Bearing Surface Of Head To End Of Second Diameter
    Between 1.094 inches and 1.157 inches
  • Distance From Largest Bearing Surface Of Head To End Of Third Diameter
    Between 1.469 inches and 1.595 inches
  • Thread Diameter
    0.375 inches
  • Thready Qty Per Inch (tpi)
    24
  • Hardness Rating
    30.0 rockwell c and 34.0 rockwell c
  • Externally Relieved Body Diameter Quantity
    3
  • Material
    Steel comp 8740
  • Thread Series Designator
    Unf
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 5306001312599

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
78027 Textron Lycoming Inc
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