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NSN 5306-01-277-4343

Close Tolerance Hex Head Bolt

About this product

Between 1.506 inches and 1.526 inches fastener length, spline drive shear head head style, 0.210 inches head height, grip diameter: between 0.3740 inches and 0.3745 inches .

Manufacturer part number ST3M744-6D18 for national stock number 5306012774343.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-277-4343.

  • MPN or Model

    ST3M744-6D18

  • 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 0.371 inches and 0.411 inches
  • Fastener Length
    Between 1.506 inches and 1.526 inches
  • Head Style
    Spline drive shear head
  • Head Height
    0.210 inches
  • Grip Diameter
    Between 0.3740 inches and 0.3745 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.111 inches first hole
  • Head Minor Diameter
    Between 0.578 inches and 0.585 inches
  • Thread Diameter
    0.375 inches
  • Grip Length
    Between 1.388 inches and 1.418 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.398 inches first hole and 1.408 inches first hole
  • 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 5306012774343

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M744-6D18 Boeing Company, The
VS3174-6D18 Arconic Global Fasteners & Rings,
ST3M744-6D18 Sonic Industries Inc.
ST3M744-6D18 Reid Products Inc.
ST3M744-6D18 West Coast Aerospace Inc
VCG0001-6D18 Valley-todeco, Inc.
AIC687-6D18 Sps Technologies, Llc
PBF1265-6D18 Sps Technologies, Llc
MB154-6D18 Hi-shear Corporation
122895-6D18 Sps Technologies, Llc
S406-6D18 Huck International, Inc.
MB154-6D18 Lisi Aerospace Canada Corp
S406-6D18 Huck Intl Inc
10116194 Nimikkeistokeskus Ncb Finland
ST3M744-6D18 Alcoa Global Fasteners, Inc.
VS3174-6D18 Alcoa Global Fasteners, Inc.
GS1015-6D18 B & B Specialties Inc.
Stock Check
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