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NSN 5306-01-060-6843

Close Tolerance Hex Head Bolt

About this product

Dry film lube per mil-l-8937b on bearing surface of head and grip.

Manufacturer part number PBF7521-8DN25 for national stock number 5306010606843.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-060-6843.

  • MPN or Model

    PBF7521-8DN25

  • 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.)
    0.2 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.528 inches
  • Fastener Length
    Between 2.080 inches and 2.100 inches
  • Head Style
    Spline drive shear head
  • Head Height
    0.281 inches
  • Width Between Flats
    0.901 inches
  • Grip Diameter
    Between 0.4982 inches and 0.4991 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 1.552 inches and 1.572 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    220000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.825 inches first hole and 1.845 inches first hole
  • Material
    Stainless steel
  • Material Specification
    Ams6487 assn standard single material response
  • Surface Treatment
    Cadmium top of head
  • Surface Treatment Specification
    Nas672 national specification single treatment response top of head
  • 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 5306010606843

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
PBF7521-8DN25 Sps Technologies, Llc
AIC596-8DN25 Sps Technologies, Llc
VS3133-8DN25 Arconic Global Fasteners & Rings,
VS3133-8DN25 Alcoa Global Fasteners, Inc.
C7521-8DN25 Lockheed Martin Corporation
C7521-8DN25 Valley-todeco, Inc.
VCG0009-8DN25 Valley-todeco, Inc.
H411-8DN25 Ge Infrastructure Sensing, Inc.
120978-8D25N Sps Technologies, Llc
C7521-8DN25 Sps Technologies, Llc
120978-8D25N Sps Technologies, Llc
C7521-8DN25 Alcoa Global Fasteners, Inc.
SF118-8DN25 Saturn Fasteners Inc
H411-8DN25 Huck International, Inc.
VS3133-8DN25 Tactair Fluid Controls, Inc.
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