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NSN 5305-01-377-0946

High Torque Screw

About this product

Between 1.938 inches and 1.958 inches fastener length, flat chamfer head style, between 0.3737 inches and 0.3742 inches head diameter, head height: 0.263 inches .

Manufacturer part number 64494-4-24 for national stock number 5305013770946.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-377-0946.

  • MPN or Model

    64494-4-24

  • 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
    Between 0.438 inches and 0.458 inches
  • Fastener Length
    Between 1.938 inches and 1.958 inches
  • Head Style
    Flat chamfer
  • Head Diameter
    Between 0.3737 inches and 0.3742 inches
  • Head Height
    0.263 inches
  • Grip Diameter
    Between 0.2487 inches and 0.2492 inches
  • Internal Drive Style
    Hexagon
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.500 inches and 1.520 inches
  • Width Across Flats
    Between 0.1875 inches and 0.1900 inches
  • Thready Qty Per Inch (tpi)
    28
  • Material
    Steel comp 630
  • Material Specification
    Ams5643 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal 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 5305013770946

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
64494-4-24 Sps Technologies, Llc
C630-4-24 Lockheed Martin Corporation
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