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NSN 5305-01-049-4052

High Torque Screw

About this product

Between 2.078 inches and 2.125 inches fastener length, flat countersunk head style, between 0.880 inches and 0.890 inches head diameter, grip diameter: between 0.4358 inches and 0.4367 inches .

Manufacturer part number NAS337CP20 for national stock number 5305010494052.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-049-4052.

  • MPN or Model

    NAS337CP20

  • 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)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.630 inches and 0.697 inches
  • Fastener Length
    Between 2.078 inches and 2.125 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.880 inches and 0.890 inches
  • Grip Diameter
    Between 0.4358 inches and 0.4367 inches
  • Shank Unthreaded Hole Diameter
    0.106 inches first hole
  • Single Shear Strength
    14300 pounds per square inch
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.438 inches
  • Grip Length
    Between 1.428 inches and 1.448 inches
  • Thready Qty Per Inch (tpi)
    20
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Countersink Angle
    100.0 degrees
  • Distance From Head Largest Bearing Surface To Shank Hole Center
    1.922 inches first hole
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 6150 or steel comp 8735
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 ty2 cl2 federal specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas337 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 5305010494052

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS337CP20 National Aerospace Standards
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