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NSN 5305-01-337-8498

High Torque Screw

About this product

Red dye or paint on thread end before lubrication.

Manufacturer part number BACB30MS6R18 for national stock number 5305013378498.

Datasheet

  • Product description

    Close Tolerance Screw NSN 5305-01-337-8498.

  • MPN or Model

    BACB30MS6R18

  • Schedule B
    8109.90.0000 (Zirconium and articles thereof nesoi)
  • NMF (National Motor Freight)
    096640 - Screws, Iron Or Steel
  • Thread Class
    3a
  • Thread Direction
    Right-hand
  • Thread Length
    0.578 inches
  • Fastener Length
    Between 1.688 inches and 1.718 inches
  • Head Style
    Flat countersunk
  • Head Diameter
    Between 0.708 inches and 0.765 inches
  • Grip Diameter
    Between 0.3735 inches and 0.3745 inches
  • Internal Drive Style
    High-torque
  • Thread Diameter
    0.375 inches
  • Grip Length
    Between 1.115 inches and 1.135 inches
  • Features Provided
    Cetyl alcohol lubricant
  • Thready Qty Per Inch (tpi)
    24
  • Countersink Angle
    Between 99.0 degrees and 101.0 degrees
  • Surface Finish
    63.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads
  • Material
    Titanium alloy uns r56400
  • Material Specification
    Ams 4928 assn standard single material response or ams 4967 assn standard single material response
  • Surface Treatment
    Phosphate
  • Surface Treatment Specification
    Bac 5861, cage81205 mfr ref 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 5305013378498

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Manufacturer Part Numbers and Alternates
MPN manufacturer part number Registrant or Supplier
BACB30MS6R18 Huck International, Inc.
BACB30MS6R18 The Boeing Company
BACB30MS6R18 Sps Technologies, Llc
BACB30MS6R18 Hi-shear Corporation
BACB30MS6R18 Sps Technologies, Llc
BACB30MS6R18 Alcoa Global Fasteners, Inc.
BACB30MS6R18 Lisi Aerospace Canada Corp
BACB30MS6R18 Huck Intl Inc
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