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NSN 5306-01-624-8400

Close Tolerance Hex Head Bolt

About this product

0.706 inches fastener length, double hexagon head style, 0.140 inches head height, width between flats: 0.376 inches .

Manufacturer part number ST3M453-3D6 for national stock number 5306016248400.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-624-8400.

  • MPN or Model

    ST3M453-3D6

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.331 inches
  • Fastener Length
    0.706 inches
  • Head Style
    Double hexagon
  • Head Height
    0.140 inches
  • Width Between Flats
    0.376 inches
  • Grip Diameter
    Between 0.1890 inches and 0.1895 inches
  • Shank Unthreaded Hole Diameter
    0.075 inches and 0.070 inches all holes
  • Internal Drive Style
    W/o internal drive
  • End Application
    F-15sa
  • Thread Diameter
    0.1900 inches
  • Grip Length
    0.375 inches
  • Features Provided
    Cotter pin
  • Thready Qty Per Inch (tpi)
    32
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    0.585 inches all holes
  • Material
    Steel comp xm-13
  • Surface Treatment
    Passivate
  • 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 5306016248400

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M453-3D6 Boeing Company, The
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