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NSN 5306-01-051-5908

Close Tolerance Hex Head Bolt

About this product

Between 1.111 inches and 1.141 inches fastener length, spline drive shear head head style, 0.167 inches head height, grip diameter: between 0.3108 inches and 0.3117 inches .

Manufacturer part number PBF7521-5-11 for national stock number 5306010515908.

Datasheet

  • Product description

    Close Tolerance Bolt NSN 5306-01-051-5908.

  • MPN or Model

    PBF7521-5-11

  • 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
    Between 0.413 inches and 0.463 inches
  • Fastener Length
    Between 1.111 inches and 1.141 inches
  • Head Style
    Spline drive shear head
  • Head Height
    0.167 inches
  • Grip Diameter
    Between 0.3108 inches and 0.3117 inches
  • Head Minor Diameter
    0.605 inches
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 0.678 inches and 0.698 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    220000 pounds per square inch
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp h11
  • Material Specification
    Ams6487 assn standard single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Nas672 assn standard 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 5306010515908

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
PBF7521-5-11 Sps Technologies, Llc
C7521-5-11 Sps Technologies, Llc
C7521-5-11 Valley-todeco, Inc.
C7521-5-11 Sps Technologies, Llc
C7521-5-11 Alcoa Global Fasteners, Inc.
C7521 Lockheed Martin Corporation
C7521-5-11 Lockheed Martin Corporation
VCG0009-5-11 Valley-todeco, Inc.
AIC596-5-11 Sps Technologies, Llc
C7521-5-11 M.s. Aerospace Inc.
H411-5-11 Huck International, Inc.
120978-5-11 Sps Technologies, Llc
120978-5-11 Sps Technologies, Llc
VS3133-5-11 Alcoa Global Fasteners, Inc.
Stock Check
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