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NSN 5306-01-623-4802

Close Tolerance Hex Head Bolt

About this product

1.974 inches fastener length, double hexagon head style, between 0.247 inches and 0.267 inches head height, width between flats: 0.775 inches .

Manufacturer part number ST3M453-7-22 for national stock number 5306016234802.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-623-4802.

  • MPN or Model

    ST3M453-7-22

  • 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
    0.599 inches
  • Fastener Length
    1.974 inches
  • Head Style
    Double hexagon
  • Head Height
    Between 0.247 inches and 0.267 inches
  • Width Between Flats
    0.775 inches
  • Grip Diameter
    Between 0.436 inches and 0.437 inches
  • Thread Diameter
    0.437 inches
  • Grip Length
    Between 1.365 inches and 1.385 inches
  • Thready Qty Per Inch (tpi)
    20
  • 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 5306016234802

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M453-7-22 Boeing Company, The
MB61-7-22 Hi-shear Corporation
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