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NSN 5305-01-217-4008

High Torque Screw

About this product

3.130 inches fastener length, flat countersunk head style, between 0.469 inches and 0.477 inches head diameter, grip diameter: between 0.2470 inches and 0.2480 inches .

Manufacturer part number 302AS215 for national stock number 5305012174008.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-217-4008.

  • MPN or Model

    302AS215

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093486 - Bolts, Nuts Or Screws, NOI (sub 3)
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.500 inches
  • Fastener Length
    3.130 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.469 inches and 0.477 inches
  • Grip Diameter
    Between 0.2470 inches and 0.2480 inches
  • Internal Drive Style
    Slot
  • Thread Diameter
    0.250 inches
  • Grip Length
    2.630 inches
  • Thready Qty Per Inch (tpi)
    28
  • Hardness Rating
    44.0 rockwell c and 47.0 rockwell c
  • Countersink Angle
    100.0 degrees
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel comp 4140
  • Material Specification
    Mil-s-5626 military specification single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, type 2 class 2 federal specification single treatment response
  • Thread Series Designator
    Unf
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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 5305012174008

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
302AS215 Naval Air Systems Command
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