Scientific Cutting Tools AS5202-04RA Porting Tool Reamer

Product Description

The SCIENTIFIC CUTTING TOOLS AS5202-04RA is a porting tool reamer designed to machine precise spotface and port geometry in tube and fitting applications. It produces a 0.888-inch spotface diameter for 1/4-inch OD tube connections and uses a reamer-style pilot with a minimum pilot diameter of 0.393 inches and a maximum of 0.4565 inches. The pilot length is 0.593 inches. Four straight flutes provide clean, accurate cutting action in metallic workpieces. An AlTiN+ coating improves wear resistance and tool life in production and MRO environments. Licensed machinists, tool and die technicians, and aerospace maintenance professionals are the primary users of this tool.

This porting tool is built for use on tube dash 4 connections where AS 5202 and MS 33649 port geometry standards are required. It is suited for applications in aerospace, hydraulic, and pneumatic tube fitting installations where controlled spotface dimensions and a 30-degree seal angle are critical to joint integrity. The tool works on tube workpieces and is appropriate for both production machining and field maintenance operations that demand verified port geometry compliance.

Key Features

• 0.888-inch spotface diameter matched to 1/4-inch OD tube dash 4 connections
• Reamer-style pilot with minimum 0.393-inch and maximum 0.4565-inch pilot diameter for accurate bore alignment
• 30-degree seal angle conforms to AS 5202 and MS 33649 port standards
• Four straight flutes for clean, controlled material removal
• AlTiN+ coating for extended tool life and heat resistance
• UNJF thread type compatibility built into port geometry

Compatibility

Designed for use on tube workpieces requiring AS 5202 and MS 33649 compliant port geometry on dash 4 tube connections with 1/4-inch OD tubing.

Installation Notes

This tool is typically operated by a machinist or maintenance technician using a drill press, milling machine, or appropriate hand-held power tool with a 1/2-inch shank capability. Secure the workpiece firmly before operation and confirm pilot diameter fitment to the existing bore before cutting. Follow applicable aerospace or industrial maintenance standards for port preparation and inspect the finished spotface with appropriate gauging before assembly.