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NSN 5306-00-241-8278

Close Tolerance Hex Head Bolt

About this product

Slot in face at threaded end 0.020 in. Wide by 0.190 in. Deep.

Manufacturer part number BM28618-5 for national stock number 5306002418278.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-00-241-8278.

  • MPN or Model

    BM28618-5

  • 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)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.330 inches
  • Fastener Length
    0.642 inches
  • Head Style
    Double hexagon w/hole
  • Head Height
    0.348 inches
  • Width Between Flats
    Between 0.368 inches and 0.377 inches
  • Extended Washer Diameter
    0.526 inches
  • Extended Washer Thickness
    0.082 inches
  • Grip Diameter
    Between 0.3110 inches and 0.3120 inches
  • Thread Diameter
    0.312 inches
  • Grip Length
    0.312 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    150000 pounds per square inch
  • Material
    Stainless steel
  • Precious Material
    Silver
  • Surface Treatment
    Silver
  • Surface Treatment Specification
    Ams 2410 assn standard single treatment response
  • Thread Series Designator
    Unf
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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 5306002418278

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BM28618-5 Huck International, Inc.
BM28618-5 Huck Intl Inc
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