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NSN 5305-01-520-3843

High Torque Screw

About this product

Between 1.885 inches and 1.932 inches fastener length, flat countersunk head style, between 0.280 inches and 0.303 inches head diameter, grip diameter: between 0.1885 inches and 0.1895 inches .

Manufacturer part number HT-184-3-26 for national stock number 5305015203843.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-520-3843.

  • MPN or Model

    HT-184-3-26

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.276 inches
  • Fastener Length
    Between 1.885 inches and 1.932 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.280 inches and 0.303 inches
  • Grip Diameter
    Between 0.1885 inches and 0.1895 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 1.615 inches and 1.635 inches
  • Thready Qty Per Inch (tpi)
    32
  • Min. Tensile Strength (psi)
    180000 pounds per square inch
  • Hardness Rating
    40.0 rockwell c and 43.0 rockwell c
  • Countersink Angle
    100.0 degrees
  • Surface Finish
    32.0 microinches threads
  • Material
    Steel comp 4140 or steel comp 4340 or steel comp 8740 or steel comp 6150
  • Surface Treatment
    Cadmium
  • Surface Treatment Specification
    Qq-p-416 type 2 cl 2 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 5305015203843

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
HT-184-3-26 Hi-shear Corporation
HT-184-3-26 Lisi Aerospace Canada Corp
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