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NSN 5306-01-203-0905

Close Tolerance Hex Head Bolt

About this product

Between 1.735 inches and 1.765 inches fastener length, undercut 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 BACB30LJ8DU21 for national stock number 5306012030905.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-203-0905.

  • MPN or Model

    BACB30LJ8DU21

  • 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
    2a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.516 inches and 0.566 inches
  • Fastener Length
    Between 1.735 inches and 1.765 inches
  • Head Style
    Undercut 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 0.4981 inches and 0.4987 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.116 inches first hole
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 1.199 inches and 1.219 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    95000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.539 inches first hole and 1.589 inches first hole
  • Surface Finish
    32.0 microinches threads
  • Material
    Iron alloy 660
  • Material Specification
    Ams5737 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification 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 5306012030905

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BACB30LJ8DU21 Federal Manufacturing Corporation
BACB30LJ8DU21 Valley-todeco, Inc.
BACB30LJ8DU21 Sps Technologies, Llc
BACB30LJ8DU21 Arconic Global Fasteners & Rings,
BACB30LJ8DU21 Sps Technologies, Llc
BACB30LJ8DU21 Sps Technologies, Llc
BACB30LJ8DU21 Alcoa Global Fasteners, Inc.
BACB30LJ8DU21 The Boeing Company
BACB30LJ8DU21 Huck International, Inc.
BACB30LJ8DU21 Sps Technologies, Llc
BACB30LJ8DU21 Grimes Aerospace Co
BACB30LJ8DU21 Huck Intl Inc
BACB30LJ8DU21 Grimes Aerospace Company
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