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NSN 5306-01-452-1450

Close Tolerance Hex Head Bolt

About this product

Double shear strength 9,300 lbs:ultimate tensile strength 4,680 lbs.

Manufacturer part number 121673-4-27 for national stock number 5306014521450.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-452-1450.

  • MPN or Model

    121673-4-27

  • 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 0.308 inches and 0.323 inches
  • Fastener Length
    Between 2.106 inches and 2.126 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.105 inches and 0.120 inches
  • Width Between Flats
    Between 0.430 inches and 0.439 inches
  • Grip Diameter
    Between 0.2483 inches and 0.2492 inches
  • End Application
    F-15s
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.688 inches and 1.698 inches
  • Thready Qty Per Inch (tpi)
    28
  • Hardness Rating
    36.0 rockwell c fastener and 41.0 rockwell c fastener
  • Part Name Assigned By Controlling Agency
    Bolt, close toler
  • Material
    Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 4130
  • Material Specification
    Mil-s-5000 military standard 1st material response or mil-s-5626 military standard 2nd material response or mil-s-6049 military standard 3rd material response or mil-s-6758 military standard 5th material response
  • Surface Treatment
    Passivate ring
  • Surface Treatment Specification
    Qq-p-416, type ii, class 2 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 5306014521450

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
121673-4-27 Sps Technologies, Llc
ST3M735-4-27 Boeing Company, The
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