NSN 5305-01-289-5000

Self-tapping Screw

About this product

Between 0.720 inches and 0.750 inches fastener length, hexagon extended washer head style, between 0.270 inches and 0.295 inches head height, width between flats: between 0.551 inches and 0.562 inches .

Manufacturer part number MS51871-13 for national stock number 5305012895000.


  • Product description

    Tapping Screw NSN 5305-01-289-5000.

  • MPN or Model


  • 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
    Between 0.720 inches and 0.750 inches
  • Head Style
    Hexagon extended washer
  • Head Height
    Between 0.270 inches and 0.295 inches
  • Width Between Flats
    Between 0.551 inches and 0.562 inches
  • Extended Washer Diameter
    Between 0.720 inches and 0.780 inches
  • Extended Washer Thickness
    Between 0.037 inches and 0.063 inches
  • Internal Drive Style
    W/o internal drive
  • Min. Tensile Strength (psi)
    150000 pounds per square inch
  • Hardness Rating
    47.0 rockwell c threads
  • Nonmachine Thread Style
    Dog type (type b or c)
  • Nonmachine Thread Diameter
    0.375 inches
  • Material
    Steel comp 4037
  • Material Specification
    66 military specification single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 type 2 cl 2 federal specification single treatment response or mil-c-81562 type 2 cl 2 military specification single treatment response
  • Nondefinitive Specification/std Data
    B type
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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

Pricing and Availability

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NSN 5305012895000

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS51871-13 Military Standards
Stock Check
Availability for this item was last checked on 02/26/24. The quantities and conditions available at the time were:
  • NE: 213
  • NS: 20