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NSN 5306-01-478-6440

Close Tolerance Hex Head Bolt

About this product

Between 1.941 inches and 1.971 inches fastener length, hexagon head style, 0.552 inches head height, width between flats: between 0.492 inches and 0.502 inches .

Manufacturer part number NAS6705-17 for national stock number 5306014786440.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-478-6440.

  • MPN or Model

    NAS6705-17

  • 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 Length
    0.469 inches
  • Fastener Length
    Between 1.941 inches and 1.971 inches
  • Head Style
    Hexagon
  • Head Height
    0.552 inches
  • Width Between Flats
    Between 0.492 inches and 0.502 inches
  • Grip Diameter
    Between 0.3115 inches and 0.3125 inches
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 1.521 inches and 1.541 inches
  • Thready Qty Per Inch (tpi)
    24
  • Material
    Iron alloy 660
  • Material Specification
    Ams5731, ams5732, ams5737 assn standard 1st material response or ams5353 assn standard 2nd material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type2, class2 federal specification 1st treatment response
  • 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 5306014786440

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS6705-17 National Aerospace Standards
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