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NSN 5305-01-469-1776

High Torque Screw

About this product

0.768 inches fastener length, flat countersunk head style, 0.6901 inches head diameter, grip diameter: between 0.4985 inches and 0.4995 inches .

Manufacturer part number NAS1581K8T30 for national stock number 5305014691776.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-469-1776.

  • MPN or Model

    NAS1581K8T30

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    3.411 inches
  • Fastener Length
    0.768 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.6901 inches
  • Grip Diameter
    Between 0.4985 inches and 0.4995 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.500 inches
  • Grip Length
    2.643 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    101.0 degrees
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams4967 assn standard 1st 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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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1581K8T30 National Aerospace Standards
Stock Check
Availability for this item was last checked on 04/08/22. The quantities and conditions available at the time were:
  • NE: 34
  • NS: 72