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NSN 5305-01-337-4893

High Torque Screw

About this product

Tapped hole in head 0.138-32 unjc-3b threads. Distance from top of head to injection port 0.270 nom. Inch. Injection port 0.120 nom. In. Lg; 0.060 nom. In. Wide.

Manufacturer part number HT4075VS4-8-27 for national stock number 5305013374893.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-337-4893.

  • MPN or Model

    HT4075VS4-8-27

  • 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
    0.469 inches
  • Fastener Length
    Between 0.954 inches and 0.984 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.456 inches and 0.508 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.490 inches and 0.510 inches
  • Thready Qty Per Inch (tpi)
    28
  • 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
  • Part Name Assigned By Controlling Agency
    Navy special project
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams 4928 assn standard single material response or ams 4967 assn standard single material response
  • Surface Treatment
    Phosphate
  • 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 5305013374893

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4075VS4-8-27 Hi-shear Corporation
HT4075VS4-8-27 Lisi Aerospace Canada Corp
HT4075VS4-8-27 Arconic Global Fasteners & Rings,
HT4075VS4-8-27 Huck International, Inc.
HT4075VS4-8-27 Deutsch Co The
HT4075VS4-8-27 Sps Technologies, Llc
HT4075VS4-8-27 Huck Intl Inc
HT4075VS4-8-27 Alcoa Global Fasteners, Inc.
HT4075VS4-8-27 Naval Inventory Control Point
HT4075VS4-8-27 Hi-shear Corporation
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