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NSN 5305-01-518-9353

High Torque Screw

About this product

0.745 inches fastener length, flat chamfer head style, between 0.355 inches and 0.397 inches head diameter, head height: 0.063 inches .

Manufacturer part number NAS4904U6 for national stock number 5305015189353.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-518-9353.

  • MPN or Model

    NAS4904U6

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.370 inches
  • Fastener Length
    0.745 inches
  • Head Style
    Flat chamfer
  • Head Diameter
    Between 0.355 inches and 0.397 inches
  • Head Height
    0.063 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    Tri-wing recess
  • Thread Diameter
    0.250 inches
  • Grip Length
    0.375 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Material
    Titanium alloy
  • Material Specification
    Ams4928 military specification single material response
  • Thread Series Designator
    Unjf
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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 5305015189353

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS4904U6 National Aerospace Standards
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