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NSN 5305-01-134-1973

High Torque Screw

About this product

Between 5.203 inches and 5.250 inches fastener length, flat countersunk head style, between 1.007 inches and 1.017 inches head diameter, grip diameter: between 0.4982 inches and 0.4991 inches .

Manufacturer part number NAS338CPA51 for national stock number 5305011341973.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-134-1973.

  • MPN or Model

    NAS338CPA51

  • 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.)
    0.3 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.755 inches and 0.822 inches
  • Fastener Length
    Between 5.203 inches and 5.250 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 1.007 inches and 1.017 inches
  • Grip Diameter
    Between 0.4982 inches and 0.4991 inches
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 4.428 inches and 4.448 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
  • Surface Finish
    32.0 microinches grip
  • Material
    Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 8735 or steel comp 6150
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, type 2 class 2 federal specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas338 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 5305011341973

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS338CPA51 National Aerospace Standards
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