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NSN 5305-01-337-6981

High Torque Screw

About this product

Tapped hole in head 0.138-32 unjc-3b threads. Distance from top of head to injection port 0.910 nom. Inch. Injection port 0.120 nom. In. Lg; 0.060 nom. In. Wide.

Manufacturer part number HT4075D6-20-91 for national stock number 5305013376981.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-337-6981.

  • MPN or Model

    HT4075D6-20-91

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.641 inches
  • Fastener Length
    Between 1.876 inches and 1.906 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.692 inches and 0.763 inches
  • Grip Diameter
    Between 0.3740 inches and 0.3745 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.375 inches
  • Grip Length
    Between 1.240 inches and 1.260 inches
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    32.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads
  • Material
    Steel comp xm-13
  • Material Specification
    Ams 5629 assn standard single material response
  • Surface Treatment
    Passivate
  • Surface Treatment Specification
    Qq-p-35 federal 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 5305013376981

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT4075D6-20-91 Huck International, Inc.
HT4075D6-20-91 Arconic Global Fasteners & Rings,
HT4075D6-20-91 Hi-shear Corporation
HT4075D6-20-91 Lisi Aerospace Canada Corp
HT4075D6-20-91 Deutsch Co The
HT4075D6-20-91 Sps Technologies, Llc
HT4075D6-20-91 Huck Intl Inc
HT4075D6-20-91 Alcoa Global Fasteners, Inc.
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