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NSN 5306-01-166-1704

Close Tolerance Hex Head Bolt

About this product

Between 1.265 inches and 1.312 inches fastener length, hexagon head style, between 0.109 inches and 0.141 inches head height, width between flats: between 0.365 inches and 0.377 inches .

Manufacturer part number AN173DD12 for national stock number 5306011661704.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-166-1704.

  • MPN or Model

    AN173DD12

  • Schedule B
    7616.10.6000 (Threaded fasteners of aluminum)
  • NMF (National Motor Freight)
    013280 - Alum Bolts
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.374 inches and 0.453 inches
  • Fastener Length
    Between 1.265 inches and 1.312 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.109 inches and 0.141 inches
  • Width Between Flats
    Between 0.365 inches and 0.377 inches
  • Grip Diameter
    Between 0.1889 inches and 0.1894 inches
  • Shank Unthreaded Hole Diameter
    0.070 inches first hole
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 0.859 inches and 0.891 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    62000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.025 inches first hole and 1.157 inches first hole
  • Surface Finish
    63.0 microinches grip
  • Material
    Aluminum alloy 6061 or aluminum alloy 2024 or aluminum alloy
  • Surface Treatment
    Oxide film or anodize
  • Surface Treatment Specification
    Mil-c-5541 military specification 1st treatment response or mil-a-8625 military specification 2nd treatment 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 5306011661704

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
AN173DD12 Aeronautical Standards Group
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