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NSN 5306-01-656-8181

Close Tolerance Hex Head Bolt

About this product

Undrilled shank.

Manufacturer part number STSBG001A04U011 for national stock number 5306016568181.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-656-8181.

  • MPN or Model

    STSBG001A04U011

  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.293 inches
  • Fastener Length
    0.9805 inches
  • Head Style
    Double hexagon
  • Head Height
    0.164 inches
  • Width Between Flats
    Between 0.430 inches and 0.439 inches
  • Grip Diameter
    Between 0.248 inches and 0.249 inches
  • End Application
    Various c-5
  • Thread Diameter
    0.250 inches
  • Grip Length
    0.6875 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    156000 pounds per square inch
  • Part Name Assigned By Controlling Agency
    Bolt-shear, 156 ksi fsu external wrenching 12-point
  • Material
    Steel comp h11
  • Surface Treatment
    Chromate and nickel and 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 5306016568181

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
STSBG001A04U011 Lockheed Martin Corporation
STSBG001 Lockheed Martin Corporation
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