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NSN 5305-01-059-0219

High Torque Screw

About this product

Between 2.015 inches and 2.047 inches fastener length, flat countersunk head style, between 0.693 inches and 0.768 inches head diameter, grip diameter: between 0.3733 inches and 0.3742 inches .

Manufacturer part number BACB30AB-P6-27A for national stock number 5305010590219.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-059-0219.

  • MPN or Model

    BACB30AB-P6-27A

  • 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
    Between 0.442 inches and 0.494 inches
  • Fastener Length
    Between 2.015 inches and 2.047 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.693 inches and 0.768 inches
  • Grip Diameter
    Between 0.3733 inches and 0.3742 inches
  • Internal Drive Style
    Cross recess type 1
  • Thread Diameter
    0.375 inches
  • Grip Length
    Between 1.552 inches and 1.572 inches
  • Thready Qty Per Inch (tpi)
    24
  • Min. Tensile Strength (psi)
    160000 pounds per square inch
  • Hardness Rating
    36.0 rockwell c and 40.0 rockwell c
  • Countersink Angle
    100.0 degrees
  • Surface Finish
    63.0 microinches grip
  • Material
    Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 or steel comp 4037
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416, type 2, class 3 federal specification single treatment response
  • Thread Series Designator
    Unf
  • Specification Data
    81205-bacb30ab manufacturers standard
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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 5305010590219

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BACB30AB-P6-27A The Boeing Company
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