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NSN 5305-01-530-3651

High Torque Screw

About this product

5.999 inches fastener length, flat countersunk head style, between 1.404 inches and 1.538 inches head diameter, grip diameter: between 0.747 inches and 0.748 inches .

Manufacturer part number BACB30LU12-74 for national stock number 5305015303651.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-530-3651.

  • MPN or Model

    BACB30LU12-74

  • Schedule B
    7318.15.2000 (Bolts and bolts and their nuts or washers exported in the same shipment)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    1.041 inches
  • Fastener Length
    5.999 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 1.404 inches and 1.538 inches
  • Grip Diameter
    Between 0.747 inches and 0.748 inches
  • Internal Drive Style
    Cross recess type 1
  • End Application
    C-135 aircraft
  • Thread Diameter
    0.750 inches
  • Grip Length
    4.625 inches
  • Thready Qty Per Inch (tpi)
    16
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Part Name Assigned By Controlling Agency
    Bolt, 100 degrees head, cross recess, close tolerance, alloy steel, self-locking and nonlocking
  • Material
    Steel comp 4340 or steel comp 8740
  • Material Specification
    Ams-6415 assn standard single material response or ams-6483 assn standard single material response or mil-s-6049 military standard single material response or ams-6322 assn standard single material response
  • Surface Treatment
    Cadmium and chromate
  • Surface Treatment Specification
    Qq-p-416 type 2 class 2 federal specification single treatment response
  • 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 5305015303651

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BACB30LU12-74 The Boeing Company
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