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NSN 5305-01-455-3509

High Torque Screw

About this product

1.953 inches fastener length, flat countersunk head style, 0.888 inches head diameter, grip diameter: between 0.436 inches and 0.437 inches .

Manufacturer part number NAS1087-24 for national stock number 5305014553509.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-455-3509.

  • MPN or Model

    NAS1087-24

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.453 inches
  • Fastener Length
    1.953 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.888 inches
  • Grip Diameter
    Between 0.436 inches and 0.437 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.437 inches
  • Grip Length
    1.500 inches
  • Thready Qty Per Inch (tpi)
    20
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Titanium alloy
  • 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 5305014553509

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1087-24 National Aerospace Standards
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