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NSN 5306-01-575-9050

Close Tolerance Hex Head Bolt

About this product

Between 0.448 inches and 0.478 inches fastener length, fillister countersunk head style, between 0.339 inches and 0.381 inches head diameter, head height: 0.083 inches .

Manufacturer part number NAS1790-3R2 for national stock number 5306015759050.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-575-9050.

  • MPN or Model

    NAS1790-3R2

  • 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
    0.338 inches
  • Fastener Length
    Between 0.448 inches and 0.478 inches
  • Head Style
    Fillister countersunk
  • Head Diameter
    Between 0.339 inches and 0.381 inches
  • Head Height
    0.083 inches
  • Grip Diameter
    0.189 inches
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 0.110 inches and 0.140 inches
  • Thready Qty Per Inch (tpi)
    32
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp 4140 or steel comp 4340 or steel comp 8740
  • Material Specification
    Mil-s-5626 military specification 1st material response or ams 6415 assn standard 2nd material response or mil-s-6049 military specification 3rd material response
  • Surface Treatment
    Cadmium
  • 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 5306015759050

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1790-3R2 National Aerospace Standards
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