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NSN 5306-01-014-3377

Close Tolerance Hex Head Bolt

About this product

Between 1.380 inches and 1.420 inches fastener length, between 0.3791 inches and 0.3796 inches grip diameter, 0.067 inches first hole shank unthreaded hole diameter, thread diameter: 0.375 inches.

Manufacturer part number A317980 for national stock number 5306010143377.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-014-3377.

  • MPN or Model

    A317980

  • 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
    0.487 inches
  • Fastener Length
    Between 1.380 inches and 1.420 inches
  • Grip Diameter
    Between 0.3791 inches and 0.3796 inches
  • Shank Unthreaded Hole Diameter
    0.067 inches first hole
  • Thread Diameter
    0.375 inches
  • Grip Length
    0.810 inches
  • Thready Qty Per Inch (tpi)
    24
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.200 inches first hole
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel
  • Material Specification
    S99, fscm k0289 mfr ref single material response
  • 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 5306010143377

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
A317980 Bae Systems (operations) Ltd
A317980 British Aerospace Military
A317980 Bae Systems (operations) Ltd
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