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NSN 5305-00-983-6661

Button Head Socket Screw

About this product

Between 0.844 inches and 0.875 inches fastener length, flat chamfer head style, between 0.365 inches and 0.375 inches head diameter, head height: between 0.244 inches and 0.250 inches .

Manufacturer part number 3M991-4-6 for national stock number 5305009836661.

Datasheet

  • Product description

    Socket Head Cap Screw NSN 5305-00-983-6661.

  • MPN or Model

    3M991-4-6

  • 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.)
    1.5 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.844 inches and 0.875 inches
  • Fastener Length
    Between 0.844 inches and 0.875 inches
  • Head Style
    Flat chamfer
  • Head Diameter
    Between 0.365 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 0.190 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 45.0 rockwell c
  • Minimum Yield Strength
    130000 pounds per square inch
  • Material
    Steel
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 type 2 cl 3 federal specification single treatment response
  • Thread Series Designator
    Unf
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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

Pricing and Availability

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NSN 5305009836661

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
3M991-4-6 Sps Technologies, Llc
870572-00 Defense Reduction Agency
3M991-4-6 Safety Socket Llc
3M991-4-6 Boeing Company, The
3M991-4-6 Usm Corp
XX002-0279 Rdm Technology B.v.
MS16998-44 Military Standards
AJA01-C06 Robert Fulton Company
5305009836661 E.c.a Etablissement
Stock Check
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