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NSN 5305-01-345-2456

High Torque Screw

About this product

Between 1.704 inches and 1.734 inches fastener length, oval countersunk head style, between 0.389 inches and 0.394 inches head diameter, grip diameter: between 0.2490 inches and 0.2495 inches .

Manufacturer part number HT4028L4-20 for national stock number 5305013452456.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-345-2456.

  • MPN or Model

    HT4028L4-20

  • 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 1.704 inches and 1.734 inches
  • Head Style
    Oval countersunk
  • Head Diameter
    Between 0.389 inches and 0.394 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 1.240 inches and 1.260 inches
  • 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
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams4928 assn standard single material response or ams4967 assn standard single material 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 5305013452456

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4028L4-20 Sps Technologies Ltd Tj Brooks
HT4028L4-20 Huck International, Inc.
HT4028L4-20 Arconic Global Fasteners & Rings,
HT4028L4-20 Sps Technologies, Llc
HT4028L4-20 Hi-shear Corporation
HT4028L4-20 Ametek Air Technology Group Ltd
ST3M466V4L20-1 Boeing Company, The
11909V4L20-1 Reid Products Inc.
ST3M466V4L20-1 Alcoa Global Fasteners, Inc.
ST3M466V4L20-1 Sps Technologies Ltd Tj Brooks
HT4028L4-20 Lisi Aerospace Canada Corp
HT4028L4-20 Huck Intl Inc
10113711 Nimikkeistokeskus Ncb Finland
HT4028L4-20 Alcoa Global Fasteners, Inc.
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