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NSN 5305-01-391-0471

High Torque Screw

About this product

Between 0.448 inches and 0.478 inches fastener length, flat countersunk head style, 0.328 inches head diameter, thread diameter: 0.190 inches.

Manufacturer part number NAS1993-2T for national stock number 5305013910471.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-391-0471.

  • MPN or Model

    NAS1993-2T

  • 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
    Between 0.313 inches and 0.363 inches
  • Fastener Length
    Between 0.448 inches and 0.478 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    0.328 inches
  • Thread Diameter
    0.190 inches
  • Thready Qty Per Inch (tpi)
    32
  • Material
    Steel
  • Surface Treatment
    Cadmium and chromate
  • Thread Series Designator
    Unjf
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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 5305013910471

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1993-2T National Aerospace Standards
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