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NSN 5305-01-023-5844

High Torque Screw

About this product

Between 1.095 inches and 1.125 inches fastener length, flat countersunk head style, between 0.951 inches and 1.014 inches head diameter, grip diameter: between 0.4990 inches and 0.4995 inches .

Manufacturer part number NAS668V6HT for national stock number 5305010235844.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-023-5844.

  • MPN or Model

    NAS668V6HT

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    136500 - Metal NOI/metal Alloys NOI
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.710 inches and 0.760 inches
  • Fastener Length
    Between 1.095 inches and 1.125 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.951 inches and 1.014 inches
  • Grip Diameter
    Between 0.4990 inches and 0.4995 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 0.365 inches and 0.385 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    100.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Titanium alloy uns r54520
  • Material Specification
    Nas621, comp 6al-4v assn standard single material response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas668 professional/industrial association standard
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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 5305010235844

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS668V6HT National Aerospace Standards
NAS668V6HT National Aerospace Standards
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