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NSN 5306-00-248-9727

Close Tolerance Hex Head Bolt

About this product

Between 5.450 inches and 5.480 inches fastener length, dished hexagon head style, between 0.250 inches and 0.265 inches head height, width between flats: between 0.741 inches and 0.752 inches .

Manufacturer part number 65351-11576-103 for national stock number 5306002489727.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-00-248-9727.

  • MPN or Model

    65351-11576-103

  • 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
    0.735 inches
  • Fastener Length
    Between 5.450 inches and 5.480 inches
  • Head Style
    Dished hexagon
  • Head Height
    Between 0.250 inches and 0.265 inches
  • Width Between Flats
    Between 0.741 inches and 0.752 inches
  • Grip Diameter
    Between 0.4985 inches and 0.4995 inches
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 4.740 inches and 4.760 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Surface Finish
    63.0 microinches bearing surface of head
  • Material
    Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150
  • Surface Treatment
    Cadmium
  • 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 5306002489727

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
65351-11576-103 Sikorsky Aircraft Corporation
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