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NSN 5305-01-439-8417

Button Head Socket Screw

About this product

0.250 inches fastener length, flat chamfer head style, between 0.262 inches and 0.270 inches head diameter, head height: between 0.159 inches and 0.164 inches .

Manufacturer part number 91251A190 for national stock number 5305014398417.

Datasheet

  • Product description

    Socket Head Cap Screw NSN 5305-01-439-8417.

  • MPN or Model

    91251A190

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.188 inches
  • Fastener Length
    0.250 inches
  • Head Style
    Flat chamfer
  • Head Diameter
    Between 0.262 inches and 0.270 inches
  • Head Height
    Between 0.159 inches and 0.164 inches
  • Internal Drive Style
    Hexagon
  • Thread Diameter
    0.164 inches
  • Width Across Flats
    0.141 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    180000 pounds per square inch
  • Hardness Rating
    39.0 rockwell c and 45.0 rockwell c
  • Material
    Steel uns k03104
  • Material Specification
    Astm a574 assn standard single material response
  • Thread Series Designator
    Unc
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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

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NSN 5305014398417

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
91251A190 Mcmaster-carr Supply Company
PWA82001-23 United Technologies Corporation
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