1-321-802-5889

NSN 5306-01-476-1192

Close Tolerance Hex Head Bolt

About this product

Between 1.556 inches and 1.576 inches fastener length, spline drive shear head head style, 0.164 inches head height, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number ST3M744-4-20 for national stock number 5306014761192.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-476-1192.

  • MPN or Model

    ST3M744-4-20

  • 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
    0.316 inches
  • Fastener Length
    Between 1.556 inches and 1.576 inches
  • Head Style
    Spline drive shear head
  • Head Height
    0.164 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Head Minor Diameter
    Between 0.448 inches and 0.455 inches
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.240 inches and 1.260 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • 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
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 5306014761192

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
ST3M744-4-20 Heartland Precision Fasteners, Inc.
ST3M744-4-20 Fastener Innovation Technology, Inc.
VS3174-4-20 Arconic Global Fasteners & Rings,
122895-4-20 Sps Technologies, Llc
ST3M744-4-20 Boeing Company, The
AIC687-4-20 Sps Technologies, Llc
VCG0001-4-20 Valley-todeco, Inc.
PBF1265-4-20 Sps Technologies, Llc
122895-4-20 Sps Technologies, Llc
VS3174-4-20 Arconic Global Fasteners & Rings,
122895-4-20 Sps Technologies Inc
VS3174-4-20 Huck International, Inc.
SLB748-4-20 Space-lok, Inc.
GS1015-4-20 B & B Specialties Inc.
11823-4-20 Reid Products Inc.
VS3174-4-20 Alcoa Global Fasteners, Inc.
ST3M744-4-20 Houston Precision Fasteners I, Lp
WC744-4-20 West Coast Aerospace Inc
Stock Check
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