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NSN 5305-01-136-3544

High Torque Screw

About this product

Between 0.573 inches and 0.603 inches fastener length, flat countersunk undercut head style, between 0.252 inches and 0.305 inches head diameter, head height: between 0.068 inches and 0.078 inches .

Manufacturer part number NAS1993-4T for national stock number 5305011363544.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-136-3544.

  • MPN or Model

    NAS1993-4T

  • 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 0.313 inches and 0.363 inches
  • Fastener Length
    Between 0.573 inches and 0.603 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.252 inches and 0.305 inches
  • Head Height
    Between 0.068 inches and 0.078 inches
  • Grip Diameter
    Between 0.1885 inches and 0.1895 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 0.240 inches and 0.260 inches
  • Thready Qty Per Inch (tpi)
    32
  • Hardness Rating
    39.0 rockwell c and 43.0 rockwell c
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp e4340 or steel comp 8740
  • Material Specification
    Mil-s-5000 military specification 1st material response or mil-s-6049 military specification 2nd material response or ams6322 military specification 2nd material response
  • 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-nas1993 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 5305011363544

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1993-4T National Aerospace Standards
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