Scientific Cutting Tools MS33649-16S Porting Tool

Product Description

The SCIENTIFIC CUTTING TOOLS MS33649-16S is a precision porting tool designed to machine O-ring boss port faces on tube and hydraulic fitting installations. It spotfaces to a 1.965-inch diameter and accepts a 1-inch tube outside diameter, making it a direct solution for Tube Dash 16 applications. The tool carries a plain pilot configuration, a 4-flute straight-flute geometry, and a bright finish. It conforms to AS 5202 and MS 33649 standards, making it appropriate for aerospace, defense, and high-pressure fluid system work where port geometry must meet tight dimensional tolerances. Typically installed by machinist or maintenance technicians using a drill press or milling machine.

This porting tool is used when preparing or refacing O-ring boss ports on tube assemblies, hydraulic manifolds, and fluid system components. The Tube Dash 16 designation corresponds to a 1-inch tube OD, and the 30-degree seal angle matches the standard MS 33649 and AS 5202 port geometry. The UNJ thread type association makes it well suited for precision aerospace and military hydraulic plumbing where port face condition is critical to achieving a reliable O-ring seal. It is appropriate for both original manufacturing and field maintenance or rework operations.

Key Features

• 1.965-inch spotface diameter for Tube Dash 16 O-ring boss ports
• Plain pilot type with 1.233-inch minimum and 1.3385-inch maximum pilot diameter for positive tool alignment
• 4-flute straight-flute design for clean, controlled cutting action
• 30-degree seal angle conforming to AS 5202 and MS 33649 standards
• UNJ thread type compatibility for aerospace and high-pressure hydraulic applications
• Bright coating finish; 1-inch shank diameter for secure chuck engagement

Compatibility

Designed for use on Tube Dash 16 tube assemblies with a 1-inch outside diameter. Conforms to AS 5202 and MS 33649 port standards. Workpiece compatibility is listed as tubes.

Installation Notes

This tool is typically operated by a machinist or maintenance technician using a drill press, milling machine, or similar machine tool. Power down and de-energize any equipment before performing port rework on installed hydraulic or fluid systems. Ensure the pilot is fully engaged and the tool is running true before advancing the cutter to avoid bell-mouthing the port face. Finished port faces should be inspected for flatness and surface condition before O-ring and fitting installation.