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NSN 5305-01-457-8291

High Torque Screw

About this product

Between 1.455 inches and 1.485 inches fastener length, hexagon head style, between 0.110 inches and 0.125 inches head height, width between flats: between 0.357 inches and 0.376 inches .

Manufacturer part number NAS6803DU18 for national stock number 5305014578291.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-457-8291.

  • MPN or Model

    NAS6803DU18

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.345 inches
  • Fastener Length
    Between 1.455 inches and 1.485 inches
  • Head Style
    Hexagon
  • Head Height
    Between 0.110 inches and 0.125 inches
  • Width Between Flats
    Between 0.357 inches and 0.376 inches
  • Grip Diameter
    Between 0.1890 inches and 0.1895 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches grip and 0.086 inches grip
  • Internal Drive Style
    W/o internal drive
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 1.115 inches and 1.135 inches
  • Thready Qty Per Inch (tpi)
    32
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    0.988 inches grip and 0.998 inches grip
  • Material
    Titanium alloy uns r56400
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas6803 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 5305014578291

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS6803DU18 National Aerospace Standards
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