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NSN 5305-01-342-8578

High Torque Screw

About this product

Between 0.909 inches and 0.956 inches fastener length, flat countersunk head style, between 0.464 inches and 0.507 inches head diameter, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number PBF1475-4-8 for national stock number 5305013428578.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-342-8578.

  • MPN or Model

    PBF1475-4-8

  • Schedule B
    7508.90.0000 (Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire))
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.425 inches
  • Fastener Length
    Between 0.909 inches and 0.956 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.464 inches and 0.507 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.490 inches and 0.510 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    220000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads
  • Material
    Nickel alloy 718
  • Material Specification
    Ams 5662 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal specification single treatment response
  • Thread Series Designator
    Unjf
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Close Tolerance Screw

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

Mechanic Bill explains High Torque Screw

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NSN 5305013428578

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
PBF1475-4-8 Sps Technologies, Llc
GB510FG4-8 Northrop Grumman Systems Corporation
VCL0009-4-8 Valley-todeco, Inc.
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