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NSN 5305-01-243-9856

High Torque Screw

About this product

Cetyl alcohol lubrication.

Manufacturer part number HT4053-4-14A for national stock number 5305012439856.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-243-9856.

  • MPN or Model

    HT4053-4-14A

  • 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.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.444 inches and 0.494 inches
  • Fastener Length
    Between 1.329 inches and 1.359 inches
  • Head Style
    Oval countersunk
  • Head Diameter
    Between 0.3898 inches and 0.3948 inches
  • Grip Diameter
    Between 0.2485 inches and 0.2495 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.865 inches and 0.885 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    180000 pounds per square inch
  • Hardness Rating
    39.0 rockwell c and 43.0 rockwell c
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp 8740
  • Material Specification
    Mil-s-6049 military specification single material response
  • Surface Treatment
    Aluminum and chromate
  • Surface Treatment Specification
    Mil-c-83488, type 2, class 3 military 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 5305012439856

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4053-4-14A Alcoa Global Fasteners, Inc.
HT4053-4-14A Arconic Global Fasteners & Rings,
HT4053-4-14A Huck International, Inc.
HT4053-4-14A Fastener Innovation Technology, Inc.
HT4053-4-14A West Coast Aerospace Inc
HT4053-4-14A Hi-shear Corporation
HT4053-4-14A Sps Technologies, Llc
HT4053-4-14A Lisi Aerospace Canada Corp
ST3M740-4L14 Boeing Company, The
HT4053-4-14A Sps Technologies Inc
HT4053-4-14A Huck Intl Inc
10113580 Nimikkeistokeskus Ncb Finland
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