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NSN 5305-01-189-4073

High Torque Screw

About this product

0.688 inches fastener length, pan no. 2 head style, between 0.594 inches and 0.614 inches head diameter, head height: between 0.162 inches and 0.183 inches .

Manufacturer part number NAS5205-U4 for national stock number 5305011894073.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-189-4073.

  • MPN or Model

    NAS5205-U4

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.438 inches
  • Fastener Length
    0.688 inches
  • Head Style
    Pan no. 2
  • Head Diameter
    Between 0.594 inches and 0.614 inches
  • Head Height
    Between 0.162 inches and 0.183 inches
  • Grip Diameter
    Between 0.3106 inches and 0.3112 inches
  • Internal Drive Style
    Tri-wing recess
  • Thread Diameter
    0.3125 inches
  • Grip Length
    Between 0.240 inches and 0.260 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Material
    Titanium alloy uns r54520
  • Material Specification
    Ams 4928 assn standard single material response or ams 4967 assn standard single material 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 5305011894073

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS5205-U4 National Aerospace Standards
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