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NSN 5306-00-700-8274

Close Tolerance Hex Head Bolt

About this product

3.766 inches fastener length, hexagon head style, 0.750 inches head diameter, head height: between 0.203 inches and 0.235 inches .

Manufacturer part number 121CM10130-1 for national stock number 5306007008274.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-00-700-8274.

  • MPN or Model

    121CM10130-1

  • 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
    0.391 inches
  • Fastener Length
    3.766 inches
  • Head Style
    Hexagon
  • Head Diameter
    0.750 inches
  • Head Height
    Between 0.203 inches and 0.235 inches
  • Width Between Flats
    Between 0.553 inches and 0.564 inches
  • Grip Diameter
    Between 0.3735 inches and 0.3745 inches
  • Shank Unthreaded Hole Diameter
    0.109 inches first hole and 0.116 inches first hole
  • Thread Diameter
    0.375 inches
  • Grip Length
    3.375 inches
  • Thready Qty Per Inch (tpi)
    24
  • Hardness Rating
    24.0 rockwell c and 35.0 rockwell c
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    3.646 inches first hole
  • Material
    Iron alloy 660
  • Material Specification
    Ams 5735 assn standard single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, type 2, class 3 federal 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 5306007008274

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
121CM10130-1 Northrop Grumman Systems Corporation
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