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NSN 5306-01-159-5731

Close Tolerance Hex Head Bolt

About this product

Between 1.686 inches and 1.716 inches fastener length, undercut hexagon head style, between 0.125 inches and 0.140 inches head height, width between flats: between 0.430 inches and 0.439 inches .

Manufacturer part number BACB30LJ4D21 for national stock number 5306011595731.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-159-5731.

  • MPN or Model

    BACB30LJ4D21

  • 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
    Between 0.364 inches and 0.414 inches
  • Fastener Length
    Between 1.686 inches and 1.716 inches
  • Head Style
    Undercut hexagon
  • Head Height
    Between 0.125 inches and 0.140 inches
  • Width Between Flats
    Between 0.430 inches and 0.439 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches first hole
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.302 inches and 1.322 inches
  • Thready Qty Per Inch (tpi)
    28
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.560 inches first hole and 1.610 inches first hole
  • Surface Finish
    32.0 microinches threads
  • Material
    Iron alloy 660
  • Material Specification
    Ams 5737 assn standard single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 type 2, cl 2 federal specification 1st treatment response
  • Thread Series Designator
    Unf
  • Specification Data
    81205-bacb30lj manufacturers standard
More from these suppliers
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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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BACB30LJ4D21 The Boeing Company
BACB30LJ4D21 Valley-todeco, Inc.
BACB30LJ4D21 Federal Manufacturing Corporation
BACB30LJ4D21 Sps Technologies, Llc
BACB30LJ4D21 Arconic Global Fasteners & Rings,
BACB30LJ4D21 Sps Technologies, Llc
BACB30LJ4D21 Sps Technologies, Llc
BACB30LJ4021 The Boeing Company
BACB30LJ4D21 Alcoa Global Fasteners, Inc.
BACB30LJ4021 Huck International, Inc.
BACB30LJ4D21 Huck International, Inc.
BACB30LJ4021 Huck Intl Inc
BACB30LJ4D21 Huck Intl Inc
Stock Check
Availability for this item was last checked on 03/29/24. The quantities and conditions available at the time were:
  • NE: 39
  • NS: 16