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NSN 5305-01-347-4022

High Torque Screw

About this product

Fluorsilicon rubber o-ring,per mil-r-25988 ty1,cl 1,grade 70 lubricants applied on shank and threads.

Manufacturer part number HT271A4-10M for national stock number 5305013474022.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-347-4022.

  • MPN or Model

    HT271A4-10M

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • 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
    0.469 inches
  • Fastener Length
    Between 1.078 inches and 1.125 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.5018 inches and 0.5066 inches
  • Head Height
    Between 0.106 inches and 0.108 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.615 inches and 0.635 inches
  • Features Provided
    O ring and dry film lubricant and cetyl alcohol lubricant
  • Thready Qty Per Inch (tpi)
    29
  • 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 grip32.0 microinches threads
  • Material
    Titanium alloy uns r56400 fastener
  • Material Specification
    Ams 4967 assn standard single material response fastener
  • 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 5305013474022

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT271A4-10M Hi-shear Corporation
ST3M430V4-10ASM Boeing Company, The
ST3M430V4-10ASM Sps Technologies, Llc
ST3M430V4-10ASM Alcoa Global Fasteners, Inc.
ST3M430V4-10ASM Sps Technologies Ltd Tj Brooks
HT271A4-10M Lisi Aerospace Canada Corp
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