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NSN 5305-01-517-3072

High Torque Screw

About this product

1.220 inches fastener length, pan head style, between 0.357 inches and 0.373 inches head diameter, head height: between 0.122 inches and 0.133 inches .

Manufacturer part number BACB30LK3D14 for national stock number 5305015173072.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-517-3072.

  • MPN or Model

    BACB30LK3D14

  • 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
    0.345 inches
  • Fastener Length
    1.220 inches
  • Head Style
    Pan
  • Head Diameter
    Between 0.357 inches and 0.373 inches
  • Head Height
    Between 0.122 inches and 0.133 inches
  • Hole Diameter
    Between 0.070 inches and 0.075 inches
  • Grip Diameter
    Between 0.1879 inches and 0.1885 inches
  • Internal Drive Style
    Cross recess type ii
  • Thread Diameter
    0.190 inches
  • Grip Length
    0.875 inches
  • Hole Quantity
    2
  • Hole Type
    Drilled
  • Thready Qty Per Inch (tpi)
    32
  • Hole Configuration Style
    Round
  • Material
    Iron alloy 660
  • Material Specification
    Ams 5737 assn standard single material response
  • Surface Treatment
    Cadmium
  • Thread Series Designator
    Unjc
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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 5305015173072

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BACB30LK3D14 The Boeing Company
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