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NSN 5306-01-645-0191

Close Tolerance Hex Head Bolt

About this product

Item has ring type impedance device.

Manufacturer part number MS27576C4-24R for national stock number 5306016450191.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-645-0191.

  • MPN or Model

    MS27576C4-24R

  • 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
    0.412 inches
  • Fastener Length
    1.928 inches
  • Head Style
    Crowned hexagon
  • Head Height
    Between 0.126 inches and 0.141 inches
  • Width Between Flats
    Between 0.430 inches and 0.439 inches
  • Grip Diameter
    Between 0.248 inches and 0.249 inches
  • End Application
    Misc. List
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.500 inches and 1.516 inches
  • Thready Qty Per Inch (tpi)
    28
  • Part Name Assigned By Controlling Agency
    Bolt, self-retaining, impedance type
  • Material
    Steel comp 630
  • 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 5306016450191

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS27576C4-24R National Aerospace Standards
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