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NSN 5305-01-497-9723

High Torque Screw

About this product

Between 0.885 inches and 0.915 inches fastener length, flat countersunk head style, between 0.339 inches and 0.381 inches head diameter, grip diameter: between 0.219 inches and 0.220 inches .

Manufacturer part number NAS1790-3-9Y for national stock number 5305014979723.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-497-9723.

  • MPN or Model

    NAS1790-3-9Y

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.338 inches
  • Fastener Length
    Between 0.885 inches and 0.915 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.339 inches and 0.381 inches
  • Grip Diameter
    Between 0.219 inches and 0.220 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.190 inches
  • Grip Length
    0.562 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp 4140 or steel comp 4340 or steel comp e4340
  • Material Specification
    Mil-s-5626 military specification 1st material response or ams6415 assn standard 2nd material response or mil-s-5000 military specification 3rd material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416, tyii, cl2 federal specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas1790 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 5305014979723

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1790-3-9Y National Aerospace Standards
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