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NSN 5305-01-128-5122

High Torque Screw

About this product

Furnished with one o-ring.

Manufacturer part number HT4020-5-18A for national stock number 5305011285122.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-128-5122.

  • MPN or Model

    HT4020-5-18A

  • 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 0.505 inches and 0.572 inches
  • Fastener Length
    Between 1.640 inches and 1.687 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.629 inches and 0.634 inches
  • Head Height
    Between 0.088 inches and 0.090 inches
  • Grip Diameter
    Between 0.3115 inches and 0.3120 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 1.115 inches and 1.135 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp xm-13
  • Material Specification
    Ams5629 assn standard single material response
  • Surface Treatment
    Passivate
  • 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 5305011285122

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4020-5-18A Arconic Global Fasteners & Rings,
HT4020-5-18A Huck International, Inc.
WC4020-5-18A West Coast Aerospace Inc
HT4020-5-18A Hi-shear Corporation
HT4020-5-18A Sps Technologies, Llc
HT4020-5-18A Lisi Aerospace Canada Corp
ST3M652C5-18A Boeing Company, The
HT4020-5-18A Alcoa Global Fasteners, Inc.
HT4020-5-18A Sps Technologies Ltd Tj Brooks
ST3M652C5-18A Fastener Innovation Technology, Inc.
HT4020-5-18A Huck Intl Inc
10115170 Nimikkeistokeskus Ncb Finland
ST3M652C5-18A West Coast Aerospace Inc
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