NSN 5306-01-043-1366

Close Tolerance Hex Head Bolt

About this product

Between 4.160 inches and 4.190 inches fastener length, 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 NAS674V60H for national stock number 5306010431366.

Picture of NSN 5306-01-043-1366


  • Product description

    Close Tolerance Bolt NSN 5306-01-043-1366.

  • MPN or Model


  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    136500 - Metal NOI/metal Alloys NOI
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
  • Thread Direction
  • Thread Length
    Between 0.400 inches and 0.450 inches
  • Fastener Length
    Between 4.160 inches and 4.190 inches
  • Head Style
  • Head Height
    Between 0.125 inches and 0.140 inches
  • Width Between Flats
    Between 0.430 inches and 0.439 inches
  • Hole Diameter
    0.046 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 3.740 inches and 3.760 inches
  • Hole Quantity
  • Hole Type
  • Thready Qty Per Inch (tpi)
  • Hole Configuration Style
    Hexagon corners
  • Surface Finish
    63.0 microinches threads
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams4967 assn standard single material response
  • Thread Series Designator
  • Specification Data
    80205-nas674 professional/industrial association standard
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

Pricing and Availability

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS674V60H National Aerospace Standards
Stock Check
Availability for this item was last checked on 03/05/24. The quantities and conditions available at the time were:
  • NE: 4