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NSN 5305-01-349-9579

High Torque Screw

About this product

Between 2.511 inches and 2.541 inches fastener length, modified pan head style, between 0.306 inches and 0.322 inches head diameter, head height: between 0.105 inches and 0.115 inches .

Manufacturer part number NAS623-2-36 for national stock number 5305013499579.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-349-9579.

  • MPN or Model

    NAS623-2-36

  • 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
    0.276 inches
  • Fastener Length
    Between 2.511 inches and 2.541 inches
  • Head Style
    Modified pan
  • Head Diameter
    Between 0.306 inches and 0.322 inches
  • Head Height
    Between 0.105 inches and 0.115 inches
  • Grip Diameter
    Between 0.1610 inches and 0.1635 inches
  • Internal Drive Style
    Cross recess type iii
  • Thread Diameter
    0.1640 inches
  • Grip Length
    Between 2.240 inches and 2.260 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Material
    Steel comp 4140 or steel comp 4340 or steel comp 8740
  • Material Specification
    Mil-s-5626 military specification single material response or mil-s-5000 military specification single material response or mil-s-6049 military specification single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, ty2 cl2 federal specification single treatment response
  • Thread Series Designator
    Unjc
  • Specification Data
    80205-nas623 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 5305013499579

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS623-2-36 National Aerospace Standards
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