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NSN 5305-00-051-4557

Self-tapping Screw

About this product

0.500 inches fastener length, flat countersunk head style, between 0.257 inches and 0.279 inches head diameter, internal drive style: cross recess type 1.

Manufacturer part number AN531-6RF8 for national stock number 5305000514557.

Datasheet

  • Product description

    Tapping Screw NSN 5305-00-051-4557.

  • MPN or Model

    AN531-6RF8

  • Schedule B
    7318.14.0000 (Self-tapping screws of iron or steel)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Fastener Length
    0.500 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.257 inches and 0.279 inches
  • Internal Drive Style
    Cross recess type 1
  • Features Provided
    Casehardened
  • Nonmachine Thread Style
    Wide flute (type h or bt)
  • Countersink Angle
    Between 80.0 degrees and 82.0 degrees
  • Nonmachine Thread Diameter
    0.138 inches
  • Material
    Steel
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type 1, cl 3 federal specification single treatment response
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Tapping Screw

A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes screw, assembled washer.

Mechanic Bill explains Self-tapping Screw

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NSN 5305000514557

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
AN531-6RF8 Aeronautical Standards Group
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