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NSN 5306-01-194-4988

Close Tolerance Hex Head Bolt

About this product

Between 1.178 inches and 1.198 inches fastener length, hexagon head style, between 0.178 inches and 0.198 inches head height, width between flats: between 0.552 inches and 0.572 inches .

Manufacturer part number L3400057-005 for national stock number 5306011944988.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-194-4988.

  • MPN or Model

    L3400057-005

  • 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
    Between 0.615 inches and 0.635 inches
  • Fastener Length
    Between 1.178 inches and 1.198 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.178 inches and 0.198 inches
  • Width Between Flats
    Between 0.552 inches and 0.572 inches
  • Hole Diameter
    Between 0.060 inches and 0.080 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.543 inches and 0.583 inches
  • Hole Quantity
    2
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    28
  • Hole Configuration Style
    Hexagon corners
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel comp xm-13
  • Material Specification
    Ams 5629 assn standard single material 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 5306011944988

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
L3400057-005 Boeing Company, The
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