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NSN 5306-01-179-0902

Close Tolerance Hex Head Bolt

About this product

Vacuum cadmium plated;heat treat 280,000 psi minimum ultimate tenstile strength, rc52 minimum for maraging, rc53 minimum for aermet;magnetic particle inspect 100 percent per astm e 1444;undrilled head;head of bolt to be forged;thread shall be rolled after heat treatment;fatigue, minimum tension-tension fatigue loads, high loads equals 11,800 lbs, low load equals 1,180 lbs;high fatigue strength based on 48percent of min. Tenstile strength and 10 percent of high tenstile strength.

Manufacturer part number HS6051-6-21 for national stock number 5306011790902.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-179-0902.

  • MPN or Model

    HS6051-6-21

  • 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
    1.000 inches
  • Fastener Length
    2.312 inches
  • Head Style
    Double hexagon
  • Head Height
    Between 0.378 inches and 0.398 inches
  • Width Between Flats
    Between 0.430 inches and 0.439 inches
  • Grip Diameter
    Between 0.343 inches and 0.353 inches
  • Thread Diameter
    0.375 inches
  • Grip Length
    1.313 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    280000 pounds per square inch
  • Part Name Assigned By Controlling Agency
    Bolt, double hexagon, tension, 280, 000 psi tenstile strength, 450 degress f
  • Material
    Steel comp 305
  • Material Specification
    Ams5514 assn standard single material response or ams6532 assn standard single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Mil-c-6887, ty2, cl2 military specification single treatment response
  • Thread Series Designator
    Unf
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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 5306011790902

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HS6051-6-21 Space-lok, Inc.
SLB361-6-21 Space-lok, Inc.
HS6051-6-21 Boeing Company, The
HS6051-6-21 Mcdonnell Douglas Helicopter Co Inc
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