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NSN 5306-01-069-4926

Close Tolerance Hex Head Bolt

About this product

Between 3.040 inches and 3.070 inches fastener length, double hexagon w/hole head style, between 0.701 inches and 0.721 inches head height, width between flats: between 0.808 inches and 0.817 inches .

Manufacturer part number 57449-1 for national stock number 5306010694926.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-069-4926.

  • MPN or Model

    57449-1

  • 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.)
    0.7 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.968 inches and 1.018 inches
  • Fastener Length
    Between 3.040 inches and 3.070 inches
  • Head Style
    Double hexagon w/hole
  • Head Height
    Between 0.701 inches and 0.721 inches
  • Width Between Flats
    Between 0.808 inches and 0.817 inches
  • Extended Washer Diameter
    Between 1.220 inches and 1.230 inches
  • Extended Washer Thickness
    Between 0.168 inches and 0.188 inches
  • Grip Diameter
    Between 0.7480 inches and 0.7490 inches
  • Shank Unthreaded Hole Diameter
    0.141 inches first hole
  • Thread Diameter
    0.750 inches
  • Grip Length
    Between 2.052 inches and 2.072 inches
  • Thready Qty Per Inch (tpi)
    16
  • Min. Tensile Strength (psi)
    150000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    2.795 inches first hole and 2.815 inches first hole
  • Surface Finish
    32.0 microinches grip
  • Material
    Nickel alloy
  • Thread Series Designator
    Unf
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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 5306010694926

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
57449-1 Sps Technologies, Llc
GB511AC12-33 Northrop Grumman Systems Corporation
GB511AC12-33 Sps Technologies, Llc
57449-1 Sps Technologies, Llc
GB511AC12-33 Northrop Grumman Systems Corporation
GB511AC12-33 Sps Technologies, Llc
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