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NSN 5305-01-596-9640

High Torque Screw

About this product

Between 0.472 inches and 0.502 inches fastener length, flat countersunk head style, 0.258 inches head diameter, grip diameter: between 0.188 inches and 0.189 inches .

Manufacturer part number NAS1581C3H2P for national stock number 5305015969640.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-596-9640.

  • MPN or Model

    NAS1581C3H2P

  • 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
    0.363 inches
  • Fastener Length
    Between 0.472 inches and 0.502 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.258 inches
  • Grip Diameter
    Between 0.188 inches and 0.189 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
  • Material
    Iron alloy 660
  • Material Specification
    Ams 5731 national std/spec single material response or ams 5732 national std/spec single material response or ams 5737 national std/spec single material response or ams 5853 national std/spec single material response
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Ams qq-p-416, ty ii, cl 2 national std/spec single treatment response
  • Thread Series Designator
    Unjf
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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 5305015969640

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1581C3H2P Cessna Aircraft Company
NAS1581C3H2P National Aerospace Standards
NAS1581C3H2P Cessna Aircraft Company
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