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NSN 5305-00-404-6441

High Torque Screw

About this product

Between 0.554 inches and 0.564 inches fastener length, flat countersunk head style, 0.500 inches head diameter, grip diameter: between 0.1880 inches and 0.1890 inches .

Manufacturer part number 12W9875-9 for national stock number 5305004046441.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-404-6441.

  • MPN or Model

    12W9875-9

  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.207 inches and 0.279 inches
  • Fastener Length
    Between 0.554 inches and 0.564 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.500 inches
  • Grip Diameter
    Between 0.1880 inches and 0.1890 inches
  • Internal Drive Style
    Slot
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 0.275 inches and 0.295 inches
  • Thready Qty Per Inch (tpi)
    32
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp 630
  • Material Specification
    Fms0131 fscm 81755 mfr ref single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Mil-s-5002 military specification single treatment response
  • Thread Series Designator
    Unf
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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 5305004046441

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
12W9875-9 Lockheed Martin Corporation
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