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NSN 5306-01-339-8432

Close Tolerance Hex Head Bolt

About this product

Between 1.489 inches and 1.519 inches fastener length, dished hexagon head style, between 0.125 inches and 0.140 inches head height, width between flats: between 0.430 inches and 0.439 inches .

Manufacturer part number S4928913-4-19 for national stock number 5306013398432.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-339-8432.

  • MPN or Model

    S4928913-4-19

  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.316 inches
  • Fastener Length
    Between 1.489 inches and 1.519 inches
  • Head Style
    Dished hexagon
  • Head Height
    Between 0.125 inches and 0.140 inches
  • Width Between Flats
    Between 0.430 inches and 0.439 inches
  • Grip Diameter
    Between 0.2483 inches and 0.2492 inches
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.178 inches and 1.198 inches
  • Thready Qty Per Inch (tpi)
    28
  • Material
    Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150
  • Surface Treatment
    Cadmium headchromate bearing surface of headchromate grip
  • Surface Treatment Specification
    Dps.9.74 national specification single treatment response headdps.9.84 national specification single treatment response bearing surface of headdps.9.84 national specification single treatment response grip
  • Thread Series Designator
    Unc
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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 5306013398432

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
S4928913-4-19 Boeing Company, The
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