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NSN 5306-01-026-1801

Coaxial Connector

About this product

2.673 inches fastener length, hexagon head style, between 0.250 inches and 0.265 inches head height, width between flats: between 0.741 inches and 0.752 inches .

Manufacturer part number 20-057-8-31D for national stock number 5306010261801.

Datasheet

  • Product description

    Shear Bolt NSN 5306-01-026-1801.

  • MPN or Model

    20-057-8-31D

  • 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.)
    0.5 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.735 inches
  • Fastener Length
    2.673 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.250 inches and 0.265 inches
  • Width Between Flats
    Between 0.741 inches and 0.752 inches
  • Grip Diameter
    Between 0.4985 inches and 0.4995 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.116 inches first hole
  • Thread Diameter
    0.500 inches
  • Grip Length
    1.938 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    2.457 inches first hole
  • Material
    Steel
  • Material Specification
    Mil-b-7838 military specification single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type 2, class 2 federal specification single treatment response
  • Thread Series Designator
    Unjf
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Shear Bolt

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

Mechanic Bill explains Coaxial Connector

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NSN 5306010261801

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
20-057-8-31D Bell Helicopter Textron Inc.
20-057-8-31D Bell Helicopter Textron Inc.
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