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NSN 5306-01-272-8324

Close Tolerance Hex Head Bolt

About this product

Between 1.506 inches and 1.553 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 S397-4D18 for national stock number 5306012728324.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-272-8324.

  • MPN or Model

    S397-4D18

  • 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 0.300 inches and 0.438 inches
  • Fastener Length
    Between 1.506 inches and 1.553 inches
  • Head Style
    Spline drive shear head
  • Head Height
    0.164 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
  • Head Minor Diameter
    Between 0.448 inches and 0.455 inches
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.115 inches and 1.135 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    125000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.385 inches first hole and 1.442 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 5306012728324

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
S397-4D18 Huck International, Inc.
VS3191-4D18 Arconic Global Fasteners & Rings,
ST3M747-4D18 Boeing Company, The
VCG0002-4D18 Valley-todeco, Inc.
AIC688-4D18 Sps Technologies, Llc
PBF 1266-4D18 Sps Technologies, Llc
122896-4D18 Sps Technologies, Llc
MB155-4D18 Hi-shear Corporation
ST3M747-4D18 Alcoa Global Fasteners, Inc.
MB155-4D18 Lisi Aerospace Canada Corp
S397-4D18 Huck Intl Inc
VS3191-4D18 Alcoa Global Fasteners, Inc.
S397-4D18 Huck International, Inc.
VS3191-4D18 Arconic Global Fasteners & Rings,
ST3M747-4D18 Boeing Company, The
VCG0002-4D18 Valley-todeco, Inc.
AIC688-4D18 Sps Technologies, Llc
PBF 1266-4D18 Sps Technologies, Llc
122896-4D18 Sps Technologies, Llc
MB155-4D18 Hi-shear Corporation
ST3M747-4D18 Alcoa Global Fasteners, Inc.
MB155-4D18 Lisi Aerospace Canada Corp
S397-4D18 Huck Intl Inc
VS3191-4D18 Alcoa Global Fasteners, Inc.
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