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NSN 5306-01-179-5902

Close Tolerance Hex Head Bolt

About this product

Drilled hole in threaded end 0.250 in. Dia.

Manufacturer part number 1881-87 for national stock number 5306011795902.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-179-5902.

  • MPN or Model

    1881-87

  • 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 Direction
    Right-hand
  • Thread Length
    0.660 inches
  • Fastener Length
    5.500 inches
  • Head Style
    Round w/wrench flats chamfered
  • Head Diameter
    0.875 inches
  • Head Height
    0.200 inches
  • Width Between Flats
    0.750 inches
  • Grip Diameter
    Between 0.4980 inches and 0.4990 inches
  • Thread Diameter
    0.500 inches
  • Grip Length
    4.840 inches
  • Thready Qty Per Inch (tpi)
    20
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel uns k44220
  • Material Specification
    Mil-s-8844, class 3, 300m military specification single material response
  • Surface Treatment
    Cadmium
  • Thread Series Designator
    Unjf
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 5306011795902

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
1881-87 Goodrich Corporation
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