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NSN 5305-01-383-1817

High Torque Screw

About this product

Safety critical item. Apply one coat of mil-p-23377, ty 1, cl 1 or 3 and two top coats of mil-c-46168, color code 33538 per fed-std-595 to top of head.

Manufacturer part number 02329-7 for national stock number 5305013831817.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-383-1817.

  • MPN or Model

    02329-7

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.622 inches
  • Fastener Length
    Between 2.667 inches and 2.687 inches
  • Head Style
    Crowned hexagon
  • Head Height
    Between 0.313 inches and 0.328 inches
  • Width Between Flats
    Between 0.928 inches and 0.940 inches
  • Locking Feature
    Detent ball grip
  • Grip Diameter
    Between 0.6236 inches and 0.6241 inches
  • Shank Unthreaded Hole Diameter
    0.141 inches first hole and 0.151 inches first hole
  • Internal Drive Style
    Slot
  • Thread Diameter
    0.625 inches
  • Grip Length
    Between 1.750 inches and 1.766 inches
  • Thready Qty Per Inch (tpi)
    18
  • Min. Tensile Strength (psi)
    62500 pounds per square inch
  • Hardness Rating
    50.0 rockwell c locking feature and 62.0 rockwell c locking feature
  • Criticality Code Justification
    Feat
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    2.422 inches first hole and 2.442 inches first hole
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel comp 631 spring or steel comp 302 spring
  • Material Specification
    Qq-s-763 federal specification all material responses locking feature
  • 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 5305013831817

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
02329-7 Defense Logistics Agency
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