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NSN 5305-01-163-1983

High Torque Screw

About this product

Retaining element in shank.

Manufacturer part number MS21125A629 for national stock number 5305011631983.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-163-1983.

  • MPN or Model

    MS21125A629

  • 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 0.352 inches and 0.403 inches
  • Fastener Length
    Between 2.351 inches and 2.371 inches
  • Head Style
    Pan no. 2
  • Head Diameter
    Between 0.722 inches and 0.740 inches
  • Head Height
    Between 0.189 inches and 0.204 inches
  • Grip Diameter
    Between 0.3737 inches and 0.3742 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole and 0.116 inches first hole
  • Internal Drive Style
    Slot
  • Thread Diameter
    0.375 inches
  • Grip Length
    Between 1.812 inches and 1.828 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    63000 pounds per square inch
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    2.223 inches first hole and 2.243 inches first hole
  • Surface Finish
    32.0 microinches grip
  • Material
    Iron alloy 660
  • Material Specification
    Ams 5737 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 5305011631983

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
MS21125A629 National Aerospace Standards
MS21125A629 Military Standards
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