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NSN 5305-01-434-8761

High Torque Screw

About this product

Between 1.722 inches and 1.752 inches fastener length, flat countersunk head style, between 0.456 inches and 0.508 inches head diameter, grip diameter: between 0.2797 inches and 0.2807 inches .

Manufacturer part number NAS7304A21Y for national stock number 5305014348761.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-434-8761.

  • MPN or Model

    NAS7304A21Y

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.425 inches
  • Fastener Length
    Between 1.722 inches and 1.752 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.456 inches and 0.508 inches
  • Grip Diameter
    Between 0.2797 inches and 0.2807 inches
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.2500 inches
  • Grip Length
    Between 1.302 inches and 1.322 inches
  • Thready Qty Per Inch (tpi)
    28
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams 4928 assn standard single material response or ams 4967 assn standard single material response
  • Surface Treatment
    Aluminum
  • Surface Treatment Specification
    Nas4006 assn standard single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas7304 professional/industrial association standard
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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 5305014348761

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS7304A21Y National Aerospace Standards
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