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NSN 5305-01-277-0438

Tap Bolt

About this product

Between 3.562 inches and 3.750 inches fastener length, hexagon head style, between 0.749 inches and 0.813 inches head height, width between flats: between 1.812 inches and 1.875 inches .

Manufacturer part number B1821BH125C375N for national stock number 5305012770438.

Datasheet

  • Product description

    Hexagon Head Cap Screw NSN 5305-01-277-0438.

  • MPN or Model

    B1821BH125C375N

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    2a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 2.750 inches and 3.107 inches
  • Fastener Length
    Between 3.562 inches and 3.750 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.749 inches and 0.813 inches
  • Width Between Flats
    Between 1.812 inches and 1.875 inches
  • Thread Diameter
    1.250 inches
  • Thready Qty Per Inch (tpi)
    7
  • Min. Tensile Strength (psi)
    150000 pounds per square inch
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Steel
  • Material Specification
    Sae gr 8 j429 assn standard single material response
  • Surface Treatment
    Zinc and chromate
  • Surface Treatment Specification
    Astm b633 type 2 sc 3 assn standard single treatment response
  • Thread Series Designator
    Unc
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Hexagon Head Cap Screw

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

Mechanic Bill explains Tap Bolt

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NSN 5305012770438

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
B1821BH125C375N American National Standards
MS90728-276 Military Standards
B1821BH125C375N American National Standards
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