NSN 5305-00-283-0442

High Torque Screw

About this product

Between 1.827 inches and 1.874 inches fastener length, flat countersunk head style, between 0.625 inches and 0.635 inches head diameter, grip diameter: between 0.3112 inches and 0.3117 inches .

Manufacturer part number NAS335-16 for national stock number 5305002830442.


  • Product description

    Close Tolerance Screw NSN 5305-00-283-0442.

  • MPN or Model


  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
  • Thread Direction
  • Thread Length
    Between 0.505 inches and 0.572 inches
  • Fastener Length
    Between 1.827 inches and 1.874 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.625 inches and 0.635 inches
  • Grip Diameter
    Between 0.3112 inches and 0.3117 inches
  • Shank Unthreaded Hole Diameter
    0.076 inches first hole
  • Internal Drive Style
    Double hexagon
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 1.302 inches and 1.322 inches
  • Width Across Flats
    Between 0.188 inches and 0.190 inches
  • Thready Qty Per Inch (tpi)
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.661 inches first hole and 1.681 inches first hole
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740
  • Material Specification
    Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response
  • Thread Series Designator
  • Specification Data
    80205-nas335 professional/industrial association standard
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

Pricing and Availability

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NSN 5305002830442

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS335-16 National Aerospace Standards
Stock Check
Availability for this item was last checked on 10/12/22. The quantities and conditions available at the time were:
  • NS: 80
  • AR: 6
  • NE: 1