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NSN 5305-00-420-0664

High Torque Screw

About this product

Between 0.590 inches and 0.637 inches fastener length, flat countersunk head style, between 0.497 inches and 0.507 inches head diameter, grip diameter: between 0.2483 inches and 0.2492 inches .

Manufacturer part number SFT930-4-5 for national stock number 5305004200664.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-00-420-0664.

  • MPN or Model

    SFT930-4-5

  • Schedule B
    8112.99.1000 (Germanium and articles thereof, wrought, waste and scrap, powders, nesoi)
  • NMF (National Motor Freight)
    136500 - Metal NOI/metal Alloys NOI
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.268 inches and 0.335 inches
  • Fastener Length
    Between 0.590 inches and 0.637 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.497 inches and 0.507 inches
  • Grip Diameter
    Between 0.2483 inches and 0.2492 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.302 inches and 0.322 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    300000 pounds per square inch
  • Hardness Rating
    55.0 rockwell c and 58.0 rockwell c
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Vanadium
  • Material Specification
    Vasco jet m-a fscm 81755 mfr ref single material response
  • Surface Treatment
    Nickel and cadmium
  • Surface Treatment Specification
    Ams 2416 assn standard all treatment responses
  • 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 5305004200664

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
SFT930-4-5 Sps Technologies, Llc
VS2787T4C5 Alcoa Global Fasteners, Inc.
C079-4-5 Lockheed Martin Corporation
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