1-321-802-5889

NSN 5305-01-385-4390

High Torque Screw

About this product

Machine-pan head modified, close tolerance, short thread, torq-set, alloy steel, cadmium plated per qq-p-416, type ii, class 2, 160,000 to 180,000 psi uts, shall be in accordance with all requirements as specified in national aerospace standard nas1141 thru 1148.

Manufacturer part number NAS1143-7 for national stock number 5305013854390.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-385-4390.

  • MPN or Model

    NAS1143-7

  • Thread Class
    3a
  • Thread Length
    0.276 inches
  • Grip Diameter
    0.438 inches
  • Thread Diameter
    0.190 inches
  • Grip Length
    0.714 inches
  • Thready Qty Per Inch (tpi)
    32
  • 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.

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NSN 5305013854390

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1143-7 National Aerospace Standards
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