NSN 5305-01-132-1063

High Torque Screw

About this product

Furnish with one o ring.

Manufacturer part number HT8137-4-12AS for national stock number 5305011321063.


  • Product description

    Close Tolerance Screw NSN 5305-01-132-1063.

  • MPN or Model


  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    136500 - Metal NOI/metal Alloys NOI
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
  • Thread Direction
  • Thread Length
    Between 0.443 inches and 0.510 inches
  • Fastener Length
    Between 1.203 inches and 1.250 inches
  • Head Style
    Flat countersunk undercut
  • Head Diameter
    Between 0.502 inches and 0.507 inches
  • Head Height
    Between 0.071 inches and 0.073 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Internal Drive Style
  • Thread Diameter
    0.250 inches
  • Grip Length
    Between 0.740 inches and 0.760 inches
  • Thready Qty Per Inch (tpi)
  • Countersink Angle
    100.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Titanium alloy
  • Material Specification
    Nas621 assn standard single material response
  • Thread Series Designator
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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 5305011321063

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT8137-4-12AS Arconic Global Fasteners & Rings,
BM33024V4-12U Huck International, Inc.
HT271A4-12 Hi-shear Corporation
ST3M430V4-12AS Boeing Company, The
110179-4-12AS Sps Technologies, Llc
HT271A4-12 Lisi Aerospace Canada Corp
110179-4-12AS Sps Technologies Ltd Tj Brooks
HT8137-4-12AS Alcoa Global Fasteners, Inc.
ST3M430V4-12AS Houston Precision Fasteners I, Lp
ST3M430V4-12AS Fastener Innovation Technology, Inc.
WC8137-4-12A West Coast Aerospace Inc
BM33024V4-12U Huck Intl Inc
10115314 Nimikkeistokeskus Ncb Finland
ST3M430V4-12AS Twist Tite Mfg, Inc
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