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NSN 5305-01-286-7990

Button Head Socket Screw

About this product

Between 0.345 inches and 0.375 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 1/4-20UNC 3A X 3/8 IN. LG. for national stock number 5305012867990.

Datasheet

  • Product description

    Socket Head Cap Screw NSN 5305-01-286-7990.

  • MPN or Model

    1/4-20UNC 3A X 3/8 IN. LG.

  • 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
    0.245 inches
  • Fastener Length
    Between 0.345 inches and 0.375 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
    0.188 inches
  • Thready Qty Per Inch (tpi)
    20
  • Hardness Rating
    37.0 rockwell c and 45.0 rockwell c
  • Surface Finish
    63.0 microinches grip
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Steel comp 4340
  • Material Specification
    Astm a574 assn standard single material response
  • Thread Series Designator
    Unc
  • Nondefinitive Specification/std Data
    2 type
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 5305012867990

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1/4-20UNC 3A X 3/8 IN. LG. American National Standards
MIL-DTL-1222 Military Specifications
MIL-S-1222 Military Specifications
1/4-20UNC 3A X 3/8 IN. LG. American National Standards
Stock Check
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