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NSN 5306-01-334-7900

Close Tolerance Hex Head Bolt

About this product

Between 1.667 inches and 1.697 inches fastener length, dished hexagon head style, between 0.125 inches and 0.140 inches head height, width between flats: 0.434 inches .

Manufacturer part number NAS6204P21 for national stock number 5306013347900.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-334-7900.

  • MPN or Model

    NAS6204P21

  • 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
    0.370 inches
  • Fastener Length
    Between 1.667 inches and 1.697 inches
  • Head Style
    Dished hexagon
  • Head Height
    Between 0.125 inches and 0.140 inches
  • Width Between Flats
    0.434 inches
  • Locking Feature
    Patch threads
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • End Application
    Pacer dawn
  • Thread Diameter
    0.2500 inches
  • Grip Length
    Between 1.302 inches and 1.322 inches
  • Thready Qty Per Inch (tpi)
    28
  • Material
    Steel
  • Material Specification
    Mil-f-18240 military specification single material response locking feature
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type 2, class 2 federal specification single 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 5306013347900

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS6204P21 National Aerospace Standards
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