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NSN 5305-01-621-8973

High Torque Screw

About this product

Between 1.66 inches and 1.69 inches fastener length, flat countersunk head style, between 0.456 inches and 0.508 inches head diameter, head height: 0.111 inches .

Manufacturer part number NAS7304U20 for national stock number 5305016218973.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-621-8973.

  • MPN or Model

    NAS7304U20

  • Schedule B
    8108.90.8000 (Other wrought titanium, nesoi)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.425 inches
  • Fastener Length
    Between 1.66 inches and 1.69 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.456 inches and 0.508 inches
  • Head Height
    0.111 inches
  • Grip Diameter
    Between 0.2490 inches and 0.2495 inches
  • Single Shear Strength
    95000 pounds per square inch
  • Internal Drive Style
    Cross recess type iii
  • End Application
    B-1
  • Thread Diameter
    0.2500 inches
  • Grip Length
    Between 1.24 inches and 1.26 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
  • Part Name Assigned By Controlling Agency
    Bolt, 100 degree head, cruciform recess, close tolerance, 6al-4v titanium alloy, long thread, self-locking and nonlocking
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams 4928 or ams 4967 national std/spec single material response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas7303 through 7316 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 5305016218973

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS7304U20 National Aerospace Standards
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