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NSN 5305-01-373-3846

High Torque Screw

About this product

Between 0.449 inches and 0.479 inches fastener length, pan head style, between 0.361 inches and 0.385 inches head diameter, head height: between 0.103 inches and 0.118 inches .

Manufacturer part number NAS1143E3P for national stock number 5305013733846.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-373-3846.

  • MPN or Model

    NAS1143E3P

  • 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
    0.276 inches
  • Fastener Length
    Between 0.449 inches and 0.479 inches
  • Head Style
    Pan
  • Head Diameter
    Between 0.361 inches and 0.385 inches
  • Head Height
    Between 0.103 inches and 0.118 inches
  • Grip Diameter
    Between 0.1885 inches and 0.1895 inches
  • Internal Drive Style
    Offset cruciform (torque set)
  • Thread Diameter
    0.190 inches
  • Grip Length
    Between 0.178 inches and 0.198 inches
  • Thready Qty Per Inch (tpi)
    32
  • Surface Finish
    32.0 microinches bearing surface of head32.0 microinches threads
  • Material
    Stainless steel
  • 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 5305013733846

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1143E3P National Aerospace Standards
NAS1143E3P 3-v Fastener Co., Inc.
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