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NSN 5305-01-055-3814

High Torque Screw

About this product

Between 1.739 inches and 1.769 inches fastener length, pan head style, between 0.464 inches and 0.493 inches head diameter, head height: between 0.133 inches and 0.150 inches .

Manufacturer part number NAS1144-23 for national stock number 5305010553814.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-055-3814.

  • MPN or Model

    NAS1144-23

  • 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.)
    0.4 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.291 inches and 0.341 inches
  • Fastener Length
    Between 1.739 inches and 1.769 inches
  • Head Style
    Pan
  • Head Diameter
    Between 0.464 inches and 0.493 inches
  • Head Height
    Between 0.133 inches and 0.150 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.428 inches and 1.448 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp 4140 or steel comp e4340 or steel comp 8740
  • Material Specification
    Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-6049 military specification 3rd material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Q-p-416 ty2 cl2 federal specification 13th treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas1144 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 5305010553814

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1144-23 National Aerospace Standards
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