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NSN 5306-01-450-0725

Close Tolerance Hex Head Bolt

About this product

Between 3.185 inches and 3.215 inches fastener length, spline extended washer head style, between 0.495 inches and 0.515 inches head height, extended washer diameter: between 1.037 inches and 1.047 inches .

Manufacturer part number MS21297-09036 for national stock number 5306014500725.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-450-0725.

  • MPN or Model

    MS21297-09036

  • 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
    Between 0.925 inches and 0.975 inches
  • Fastener Length
    Between 3.185 inches and 3.215 inches
  • Head Style
    Spline extended washer
  • Head Height
    Between 0.495 inches and 0.515 inches
  • Extended Washer Diameter
    Between 1.037 inches and 1.047 inches
  • Extended Washer Thickness
    Between 0.071 inches and 0.091 inches
  • Grip Diameter
    Between 0.5605 inches and 0.5615 inches
  • Head Minor Diameter
    Between 0.610 inches and 0.625 inches
  • Thread Diameter
    0.562 inches
  • Grip Length
    Between 2.250 inches and 2.260 inches
  • Thready Qty Per Inch (tpi)
    18
  • Min. Tensile Strength (psi)
    220000 pounds per square inch
  • Hardness Rating
    46.0 rockwell c and 50.0 rockwell c
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel comp h11
  • Material Specification
    Ams 6487 assn standard single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Mil-c-8837 type 2 cl 2 military specification single treatment 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 5306014500725

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS21297-09036 Lockheed Martin Corporation
Stock Check
Availability for this item was last checked on 05/26/21. The quantities and conditions available at the time were:
  • NS: 18
  • NE: 77