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NSN 5305-01-467-8280

High Torque Screw

About this product

1.051 inches fastener length, flat countersunk head style, between 0.258 inches and 0.305 inches head diameter, grip diameter: 1.051 inches .

Manufacturer part number NAS1581C3R11 for national stock number 5305014678280.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-467-8280.

  • MPN or Model

    NAS1581C3R11

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    093490 - Bolt/nut/screw/clips/fastener/etc
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    Between 0.338 inches and 0.388 inches
  • Fastener Length
    1.051 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.258 inches and 0.305 inches
  • Grip Diameter
    1.051 inches
  • Internal Drive Style
    Torque-set ribbed
  • End Application
    Used on aircraft, airlifter c-17
  • Thread Diameter
    0.190 inches
  • Grip Length
    0.688 inches
  • Thready Qty Per Inch (tpi)
    32
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • 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 5305014678280

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
NAS1581C3R11 National Aerospace Standards
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