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NSN 5306-01-642-4286

Close Tolerance Hex Head Bolt

About this product

Bolt has 95 ksi minimum ultimate shear strength;160-190 ksi ftu tensile strength;precipitation hardened per ams5853.

Manufacturer part number NAS6703A14 for national stock number 5306016424286.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-642-4286.

  • MPN or Model

    NAS6703A14

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.345 inches
  • Fastener Length
    Between 1.205 inches and 1.235 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.110 inches and 0.125 inches
  • Width Between Flats
    Between 0.367 inches and 0.376 inches
  • Grip Diameter
    Between 0.1885 inches and 0.1895 inches
  • Thread Diameter
    0.1900 inches
  • Grip Length
    Between 0.865 inches and 0.885 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Surface Finish
    32.0 microinches threads
  • Part Name Assigned By Controlling Agency
    Bolt, hex head, close tolerance, a286 cres, long threads, self-locking and nonlocking
  • Material
    Iron alloy 660
  • Material Specification
    Cres a28 (uns s66286) iaw ams5731, 5732, 5737 or 5853 national standard single material response
  • Surface Treatment
    Aluminum
  • Surface Treatment Specification
    Nas4006 national std/spec single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas6703 through 6720 professional/industrial association standard
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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 5306016424286

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS6703A14 National Aerospace Standards
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