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NSN 5306-01-432-3256

Close Tolerance Hex Head Bolt

About this product

Between 4.355 inches and 4.385 inches fastener length, flat countersunk undercut head style, 0.508 inches head diameter, head height: 0.111 inches .

Manufacturer part number NAS4604-64 for national stock number 5306014323256.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-432-3256.

  • MPN or Model

    NAS4604-64

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.370 inches
  • Fastener Length
    Between 4.355 inches and 4.385 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    0.508 inches
  • Head Height
    0.111 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 3.990 inches and 4.010 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Titanium alloy
  • Material Specification
    Ams4928 assn standard 1st material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, ty2cl2 federal specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas4604-64 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 5306014323256

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS4604-64 National Aerospace Standards
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