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NSN 5306-00-138-6387

Close Tolerance Hex Head Bolt

About this product

W/retaining element on shank.

Manufacturer part number MS27576-6-20 for national stock number 5306001386387.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-00-138-6387.

  • MPN or Model

    MS27576-6-20

  • 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 0.357 inches and 0.439 inches
  • Fastener Length
    Between 1.789 inches and 1.809 inches
  • Head Style
    Dished hexagon
  • Head Height
    Between 0.189 inches and 0.204 inches
  • Width Between Flats
    Between 0.553 inches and 0.564 inches
  • Grip Diameter
    Between 0.3733 inches and 0.3742 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.116 inches first hole
  • Thread Diameter
    0.375 inches
  • Grip Length
    Between 1.250 inches and 1.266 inches
  • Thready Qty Per Inch (tpi)
    24
  • Hardness Rating
    36.0 rockwell c and 41.0 rockwell c
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.674 inches first hole and 1.704 inches first hole
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel
  • Material Specification
    Mil-b-83050 military specification single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, type 2, cl 2 federal specification all treatment responses
  • 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 5306001386387

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS27576-6-20 National Aerospace Standards
MS27576-6-20 Military Standards
CA4510-6-20 Arconic Global Fasteners & Rings,
AS194-6-20 Avibank Mfg., Inc.
106467-6-20 Sps Technologies, Llc
Stock Check
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