Scientific Cutting Tools MS33649-18R Porting Tool Reamer

Product Description

The SCIENTIFIC CUTTING TOOLS MS33649-18R is a porting tool reamer designed for precision spotfacing and port preparation on tubing connections conforming to AS 5202 and MS 33649 standards. The tool produces a 2.09-inch spotface diameter and is sized for a 1-1/8-inch tube outside diameter. It features 4 straight flutes, a 30-degree seal angle, and a UNJF thread type, making it the correct choice for aerospace and high-pressure fluid system port preparation. The 1-inch shank diameter provides rigid tool holding in standard milling or drill press setups. Licensed machinists and aerospace maintenance technicians are the primary installers of this tool.

This reamer is used in applications requiring MS 33649 and AS 5202 compliant port spotfaces, typically found in hydraulic, pneumatic, and fuel system tubing assemblies. The tube dash 18 designation corresponds to the 1-1/8-inch tube outside diameter. The tool is appropriate for use on workpieces requiring precise seal surface geometry where face angle and spotface concentricity are critical to system integrity.

Key Features

• 2.09-inch spotface diameter for MS 33649 and AS 5202 port conformance
• Reamer pilot type with minimum pilot diameter of 1.425 inches and maximum of 1.5265 inches
• 4 straight flutes for controlled material removal and surface finish
• 30-degree seal angle for proper seating surface geometry
• UNJF thread type compatibility
• Bright finish, uncoated for easy inspection and standard machining use

Compatibility

Designed for tube dash 18 applications with a 1-1/8-inch tube outside diameter per AS 5202 and MS 33649 port standards. Compatible with workpieces requiring UNJF thread type port preparation.

Installation Notes

This tool is installed by machinists, aerospace mechanics, or maintenance technicians using a milling machine, drill press, or appropriate rotary tooling setup. Secure the 1-inch shank in a rigid tool holder to maintain concentricity during spotfacing. Ensure the workpiece is firmly fixtured and the pilot is properly engaged before beginning the cut. Follow applicable engineering drawings and quality standards for final surface finish and dimensional verification.