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NSN 5305-01-338-4041

High Torque Screw

About this product

Between 0.762 inches and 0.809 inches fastener length, flat countersunk undercut head style, between 0.475 inches and 0.507 inches head diameter, head height: between 0.073 inches and 0.076 inches .

Manufacturer part number HT4080-4AS6EP for national stock number 5305013384041.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-338-4041.

  • MPN or Model

    HT4080-4AS6EP

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.403 inches
  • Fastener Length
    Between 0.762 inches and 0.809 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.475 inches and 0.507 inches
  • Head Height
    Between 0.073 inches and 0.076 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.365 inches and 0.385 inches
  • Features Provided
    Cetyl alcohol lubricant and o ring
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches bearing surface of head32.0 microinches threads
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams4928 assn standard single material response
  • Surface Treatment
    Phosphate
  • Surface Treatment Specification
    Bac 5861 national specification 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 5305013384041

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4080-4AS6EP Hi-shear Corporation
HT4080-4AS6EP Lisi Aerospace Canada Corp
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