Scientific Cutting Tools MS33649-2R Porting Tool Reamer

Product Description

The SCIENTIFIC CUTTING TOOLS MS33649-2R is a porting tool reamer designed to machine precision spotface seats and pilot bores for tube fittings in hydraulic, pneumatic, and fluid-system assemblies. It produces a 0.742-inch spotface diameter with a 30-degree seal angle, conforming to AS 5202 and MS 33649 standards. The reamer pilot type ensures accurate alignment during the cutting operation. With a 3-inch overall length and 3 straight flutes, this tool delivers clean, repeatable results in ferrous and non-ferrous workpiece materials. It is typically installed by machinists, aerospace maintenance technicians, and fluid-systems mechanics working on tube-fitting port preparations.

This porting tool is intended for tube dash number 2 applications with a 1/8-inch tube outside diameter. It is used when preparing ports to accept MS 33649 and AS 5202 standard fittings in aerospace, defense, and industrial fluid-line systems. The 1/2-inch straight shank mounts in standard drill presses, milling machines, or hand-held power tools where port geometry must meet tight angular and dimensional tolerances. The bright, uncoated finish suits general-purpose porting operations across a range of base materials.

Key Features

• 0.742-inch spotface diameter conforms to AS 5202 and MS 33649 standards
• 30-degree seal angle for proper fitting seat geometry
• Reamer pilot type with 0.276-inch minimum and 0.331-inch maximum pilot diameter for accurate bore alignment
• 3 straight flutes over a 1.25-inch head length for clean material removal
• 1/2-inch straight shank with 1.75-inch shank length for secure tool holding
• Bright, uncoated finish suitable for general-purpose tube-port machining

Compatibility

Designed for use with tube dash number 2 fittings having a 1/8-inch outside diameter, and conforming to AS 5202 and MS 33649 port standards on tube workpieces.

Installation Notes

This tool is used by machinists and fluid-systems technicians; depressurize and lock out all hydraulic or pneumatic lines before performing any port machining in live systems. Secure the 1/2-inch shank firmly in the tool holder and verify proper pilot engagement before beginning the spotface cut. Follow applicable aerospace or industrial maintenance standards for port dimensional verification after machining.