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NSN 5306-01-525-5051

Close Tolerance Hex Head Bolt

About this product

2.020 inches fastener length, double hexagon extended washer head style, 0.388 inches head height, width between flats: 0.644 inches .

Manufacturer part number 76924V6-21 for national stock number 5306015255051.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-525-5051.

  • MPN or Model

    76924V6-21

  • Schedule B
    8105.90.0000 (Cobalt, wrought, and articles thereof)
  • 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
    0.707 inches
  • Fastener Length
    2.020 inches
  • Head Style
    Double hexagon extended washer
  • Head Height
    0.388 inches
  • Width Between Flats
    0.644 inches
  • End Application
    1520-01-355-8250; heleicopter, attack
  • Thread Diameter
    0.375 inches
  • Thready Qty Per Inch (tpi)
    24
  • Material
    Cobalt comp mp-35-n
  • 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 5306015255051

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
76924V6-21 Sps Technologies, Llc
HS4243V6-21 Boeing Company, The
AIC6924V6-21 Sps Technologies, Llc
SLB351V6-21 Space-lok, Inc.
SII1263V6-21 Sonic Industries Inc.
MC4243V6-21 Mecair Aerospace Industries
Stock Check
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