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NSN 5305-01-406-7904

High Torque Screw

About this product

Between 1.048 inches and 1.078 inches fastener length, flat countersunk head style, between 0.573 inches and 0.635 inches head diameter, grip diameter: between 0.3110 inches and 0.3120 inches .

Manufacturer part number C7984-5-10R for national stock number 5305014067904.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-406-7904.

  • MPN or Model

    C7984-5-10R

  • 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
    Between 0.413 inches and 0.463 inches
  • Fastener Length
    Between 1.048 inches and 1.078 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.573 inches and 0.635 inches
  • Grip Diameter
    Between 0.3110 inches and 0.3120 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.312 inches
  • Grip Length
    Between 0.615 inches and 0.635 inches
  • Thready Qty Per Inch (tpi)
    24
  • Hardness Rating
    46.0 rockwell c and 49.0 rockwell c
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp h11
  • Surface Treatment
    Cadmium
  • Thread Series Designator
    Unjf
  • Specification Data
    81755-c7984-5-10r professional/industrial association specification
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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 5305014067904

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
C7984-5-10R Lockheed Martin Corporation
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