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NSN 5306-01-525-5490

Close Tolerance Hex Head Bolt

About this product

Between 0.660 inches and 0.690 inches fastener length, dished hexagon head style, between 0.125 inches and 0.140 inches head height, width between flats: between 0.429 inches and 0.439 inches .

Manufacturer part number NAS6604D4X for national stock number 5306015255490.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-525-5490.

  • MPN or Model

    NAS6604D4X

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.425 inches
  • Fastener Length
    Between 0.660 inches and 0.690 inches
  • Head Style
    Dished hexagon
  • Head Height
    Between 0.125 inches and 0.140 inches
  • Width Between Flats
    Between 0.429 inches and 0.439 inches
  • Grip Diameter
    Between 0.2641 inches and 0.2651 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches first hole and 0.086 inches first hole
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.240 inches and 0.260 inches
  • Thready Qty Per Inch (tpi)
    28
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    0.487 inches first hole and 0.507 inches first hole
  • Material
    Steel comp 4140 or steel comp 4340 or steel comp e4340 or steel comp 8740
  • Material Specification
    Ams6349 assn standard 1st material response or ams6382 assn standard 2nd material response or ams6322 assn standard 3rd material response or ams-s-5000 assn standard 4th material response or ams6415 assn standard 5th material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type 2, class 2 federal specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas6604 professional/industrial association standard
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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 5306015255490

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS6604D4X National Aerospace Standards
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