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NSN 5305-01-338-0918

High Torque Screw

About this product

Between 0.448 inches and 0.478 inches fastener length, flat countersunk head style, 0.083 inches head diameter, grip diameter: between 0.1885 inches and 0.1895 inches .

Manufacturer part number NAS1790C3-2A for national stock number 5305013380918.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-338-0918.

  • MPN or Model

    NAS1790C3-2A

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.276 inches and 0.338 inches
  • Fastener Length
    Between 0.448 inches and 0.478 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.083 inches
  • Grip Diameter
    Between 0.1885 inches and 0.1895 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 0.115 inches and 0.135 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
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Iron alloy 660
  • Material Specification
    Ams5731 assn standard single material response or ams 5732 assn standard single material response or ams5737 assn standard single material response
  • Surface Treatment
    Aluminum
  • 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 5305013380918

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1790C3-2A National Aerospace Standards
NAS1790C3-2A National Aerospace Standards
NAS1790C3-2A National Aerospace Standards
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