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NSN 5305-01-167-1091

High Torque Screw

About this product

Between 0.704 inches and 0.734 inches fastener length, oval countersunk head style, between 0.469 inches and 0.474 inches head diameter, grip diameter: between 0.3110 inches and 0.3120 inches .

Manufacturer part number 642AS1623-1 for national stock number 5305011671091.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-167-1091.

  • MPN or Model

    642AS1623-1

  • 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 0.506 inches and 0.556 inches
  • Fastener Length
    Between 0.704 inches and 0.734 inches
  • Head Style
    Oval countersunk
  • Head Diameter
    Between 0.469 inches and 0.474 inches
  • Grip Diameter
    Between 0.3110 inches and 0.3120 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 0.178 inches and 0.198 inches
  • Thready Qty Per Inch (tpi)
    24
  • 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
More from these suppliers
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 5305011671091

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
642AS1623-1 Naval Air Systems Command
HT4053-5-3A Hi-shear Corporation
HT4053-5-3A Sps Technologies, Llc
HT4053-5-3A Lisi Aerospace Canada Corp
HT4053-5-3A Huck International, Inc.
HT4053-5-3A Fastener Innovation Technology, Inc.
HT4053-5-3A West Coast Aerospace Inc
HT4053-5-3A Sps Technologies Ltd Tj Brooks
ST3M740-5L3 Boeing Company, The
HT4053-5-3A Huck Intl Inc
10115507 Nimikkeistokeskus Ncb Finland
HT4053-5-3A Alcoa Global Fasteners, Inc.
ST3M740-5-3 Boeing Company, The
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