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NSN 5306-01-143-1757

Close Tolerance Hex Head Bolt

About this product

Between 2.237 inches and 2.257 inches fastener length, double hexagon extended washer head style, between 0.444 inches and 0.464 inches head height, width between flats: 0.500 inches .

Manufacturer part number J817P080A for national stock number 5306011431757.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-143-1757.

  • MPN or Model

    J817P080A

  • Schedule B
    7508.90.0000 (Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire))
  • NMF (National Motor Freight)
    139820 - Nickel Bolts/nails/nuts/rivets Etc
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.898 inches and 0.908 inches
  • Fastener Length
    Between 2.237 inches and 2.257 inches
  • Head Style
    Double hexagon extended washer
  • Head Height
    Between 0.444 inches and 0.464 inches
  • Width Between Flats
    0.500 inches
  • Extended Washer Diameter
    Between 0.678 inches and 0.698 inches
  • Extended Washer Thickness
    Between 0.110 inches and 0.120 inches
  • Grip Diameter
    Between 0.4365 inches and 0.4370 inches
  • Thread Diameter
    0.437 inches
  • Grip Length
    Between 1.249 inches and 1.339 inches
  • Thready Qty Per Inch (tpi)
    20
  • Surface Finish
    32.0 microinches threads
  • Material
    Nickel
  • Material Specification
    C50tf13, cl-b fscm 07482 mfr ref single material response
  • Thread Series Designator
    Unjf
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Close Tolerance Bolt

An externally threaded fastener whose unthreaded portion is of a specified 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. 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. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

Mechanic Bill explains Close Tolerance Hex Head Bolt

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NSN 5306011431757

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
J817P080A General Electric Company
10115991 Nimikkeistokeskus Ncb Finland
Stock Check
Availability for this item was last checked on 07/21/23. The quantities and conditions available at the time were:
  • NS: 20
  • NE: 164