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NSN 5306-01-335-2907

Close Tolerance Hex Head Bolt

About this product

Hole drilled in top center of head,0.290/0.330 in. Dia x 0.125 in. Nomdeep.

Manufacturer part number MS21297H07031 for national stock number 5306013352907.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-335-2907.

  • MPN or Model

    MS21297H07031

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.756 inches
  • Fastener Length
    Between 2.701 inches and 2.731 inches
  • Head Style
    Spline extended washer
  • Head Height
    Between 0.383 inches and 0.403 inches
  • Extended Washer Diameter
    0.812 inches
  • Extended Washer Thickness
    Between 0.053 inches and 0.073 inches
  • Hole Diameter
    Between 0.050 inches and 0.060 inches
  • Grip Diameter
    Between 0.4360 inches and 0.4370 inches
  • Head Minor Diameter
    Between 0.485 inches and 0.500 inches
  • End Application
    Pacer dawn
  • Thread Diameter
    0.4375 inches
  • Grip Length
    Between 1.928 inches and 1.948 inches
  • Hole Quantity
    4
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    20
  • Hardness Rating
    46.0 rockwell c and 50.0 rockwell c
  • Hole Configuration Style
    Spline
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel
  • Material Specification
    Ams 6487 assn standard single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Mil-c-8837, type ii, class 2 military 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 5306013352907

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS21297H07031 Military Standards
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