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NSN 5306-01-091-6908

Close Tolerance Hex Head Bolt

About this product

Between 3.204 inches and 3.284 inches fastener length, flat countersunk head style, between 0.497 inches and 0.507 inches head diameter, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number ST3M454-4DL44 for national stock number 5306010916908.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-091-6908.

  • MPN or Model

    ST3M454-4DL44

  • 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)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.444 inches and 0.494 inches
  • Fastener Length
    Between 3.204 inches and 3.284 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.497 inches and 0.507 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches first hole and 0.081 inches first hole
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 2.740 inches and 2.760 inches
  • Thready Qty Per Inch (tpi)
    28
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    3.083 inches first hole and 3.123 inches first hole
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp xm-13
  • Material Specification
    Ams5629 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification single treatment response
  • 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 5306010916908

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M454-4DL44 Boeing Company, The
HT4025L-4D44 Hi-shear Corporation
11905-4DL44 Reid Products Inc.
ST3M454-4DL44 Huck International, Inc.
ST3M454-4DL44 Sps Technologies, Llc
ST3M454-4DL44 Alcoa Global Fasteners, Inc.
HT4025L-4D44 Boeing Company, The
HT4025L-4D44 Sps Technologies, Llc
HT4025L-4D44 Alcoa Global Fasteners, Inc.
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