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NSN 5305-01-374-6947

High Torque Screw

About this product

2.250 inches fastener length, flat countersunk head style, between 1.000 inches and 1.022 inches head diameter, grip diameter: between 0.4950 inches and 0.4990 inches .

Manufacturer part number NAS517-8-24 for national stock number 5305013746947.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-374-6947.

  • MPN or Model

    NAS517-8-24

  • 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)
  • Unit Weight (Est.)
    0.1 lb
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.750 inches
  • Fastener Length
    2.250 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 1.000 inches and 1.022 inches
  • Grip Diameter
    Between 0.4950 inches and 0.4990 inches
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.500 inches
  • Grip Length
    Between 1.485 inches and 1.515 inches
  • Thready Qty Per Inch (tpi)
    20
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Material
    Steel comp 4130 or steel comp 4340 or steel comp 8740
  • Material Specification
    Mil-s-6758 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-6049 military specification 3rd material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 ty2 cl2 federal specification single treatment response
  • Thread Series Designator
    Unjf
  • Specification Data
    80205-nas517 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 5305013746947

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS517-8-24 National Aerospace Standards
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