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NSN 5305-00-639-8085

Button Head Socket Screw

About this product

2.750 inches fastener length, flat chamfer head style, between 0.367 inches and 0.375 inches head diameter, head height: between 0.244 inches and 0.250 inches .

Manufacturer part number S643 for national stock number 5305006398085.

Datasheet

  • Product description

    Socket Head Cap Screw NSN 5305-00-639-8085.

  • MPN or Model

    S643

  • 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
    1.375 inches
  • Fastener Length
    2.750 inches
  • Head Style
    Flat chamfer
  • Head Diameter
    Between 0.367 inches and 0.375 inches
  • Head Height
    Between 0.244 inches and 0.250 inches
  • Internal Drive Style
    Hexagon
  • Thread Diameter
    0.250 inches
  • Width Across Flats
    Between 0.187 inches and 0.189 inches
  • Thready Qty Per Inch (tpi)
    20
  • Hardness Rating
    36.0 rockwell c and 43.0 rockwell c
  • Minimum Yield Strength
    140000 pounds per square inch
  • Material
    Steel comp 2340 or steel comp 3135 or steel comp 4037 or steel comp 4137 or steel comp 4140 or steel comp 4340 or steel comp 8630 or steel comp 8740
  • Material Specification
    Qq-s-624 federal specification all material responses
  • Surface Treatment
    Cadmium or zinc
  • Thread Series Designator
    Unc
  • Nondefinitive Specification/std Data
    1 type and 11 style
More from these suppliers
Socket Head Cap Screw

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See bolt, internal wrenching. Excludes screw, shoulder; and screw, machine.

Mechanic Bill explains Button Head Socket Screw

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NSN 5305006398085

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
S643 Bae Systems Land & Armaments L.p.
587452 Army Weapons Command
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