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NSN 5305-01-338-4975

High Torque Screw

About this product

Between 2.827 inches and 2.859 inches fastener length, flat countersunk undercut head style, between 0.623 inches and 0.633 inches head diameter, head height: 0.133 inches .

Manufacturer part number NAS335-26 for national stock number 5305013384975.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-338-4975.

  • MPN or Model

    NAS335-26

  • 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
    0.531 inches
  • Fastener Length
    Between 2.827 inches and 2.859 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.623 inches and 0.633 inches
  • Head Height
    0.133 inches
  • Grip Diameter
    Between 0.3112 inches and 0.3117 inches
  • Internal Drive Style
    Hexagon
  • Thread Diameter
    0.3125 inches
  • Grip Length
    2.312 inches
  • Width Across Flats
    Between 0.1885 inches and 0.1905 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    100.0 degrees
  • Material
    Steel comp 4140
  • Material Specification
    Mil-s-5626 military specification single material response
  • Surface Treatment
    Cadmium
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas335-26 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 5305013384975

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS335-26 National Aerospace Standards
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