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NSN 5306-01-047-0374

Close Tolerance Hex Head Bolt

About this product

Between 3.437 inches and 3.484 inches fastener length, double hexagon head style, between 0.271 inches and 0.291 inches head height, width between flats: between 0.741 inches and 0.752 inches .

Manufacturer part number ST3M729-8D48 for national stock number 5306010470374.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-047-0374.

  • MPN or Model

    ST3M729-8D48

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • 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
    Between 0.427 inches and 0.494 inches
  • Fastener Length
    Between 3.437 inches and 3.484 inches
  • Head Style
    Double hexagon
  • Head Height
    Between 0.271 inches and 0.291 inches
  • Width Between Flats
    Between 0.741 inches and 0.752 inches
  • Grip Diameter
    Between 0.4990 inches and 0.4995 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.111 inches first hole
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 2.990 inches and 3.010 inches
  • Thready Qty Per Inch (tpi)
    20
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    3.302 inches first hole and 3.369 inches first hole
  • Material
    Steel
  • 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 5306010470374

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M729-8D48 Huck International, Inc.
ST3M729-8D48 Sps Technologies, Llc
ST3M729-8D48 Valley-todeco, Inc.
ST3M729-8D48 Sps Technologies, Llc
ST3M729-8D48 Alcoa Global Fasteners, Inc.
MB145-8D48 Hi-shear Corporation
MB145-8D48 Lisi Aerospace Canada Corp
ST3M729-8D48 Boeing Company, The
ST3M729-8D48 Huck Intl Inc
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