Scientific Cutting Tools RPT-4 Porting Tool Solid Carbide

Product Description

The SCIENTIFIC CUTTING TOOLS RPT-4 is a solid carbide porting tool designed for preparing hydraulic and pneumatic tube fittings to UNJF thread specifications. It combines a reamer pilot with a spotface cutter in a single tool, allowing technicians to size the pilot bore and face the port seat in one operation. The RPT-4 features a 0.496-inch spotface diameter, a 0.275-inch minimum pilot diameter, and a 0.340-inch maximum pilot diameter. Overall length is 4 inches with a 0.5-inch shank diameter. The bright, uncoated solid carbide construction provides rigidity and edge retention on steel and aluminum tube port work.

This tool is used in hydraulic and pneumatic system fabrication and repair where tube fittings require a clean, flat port face and a correctly sized pilot bore. It is suited for shop or field use by hydraulic technicians, aerospace maintenance crews, and industrial plumbing specialists working with dash-4 tube connections. The straight flute geometry and 21-degree seal angle make it appropriate for producing consistent port geometry in tube end work on compatible workpieces.

Key Features

• Spotface diameter of 0.496 inches for precise port face preparation
• Compatible with 1/4-inch OD tube dash-4 connections
• Solid carbide construction for rigidity and long tool life
• 3 straight flutes with 21-degree seal angle for clean seat geometry
• Reamer-style pilot with 0.275-inch minimum and 0.340-inch maximum pilot diameter
• UNJF thread type compatibility for aerospace and hydraulic fitting standards
• Bright finish with no coating for consistent dimensional accuracy

Compatibility

Designed for use with dash-4 tube fittings with 1/4-inch outside diameter tubing requiring UNJF port preparation.

Installation Notes

This tool is installed and operated by machinists or hydraulic system technicians using a drill press, milling machine, or appropriate hand-held power tool with a 1/2-inch shank chuck. Secure the workpiece firmly before operation and ensure the pilot bore is free of burrs before engaging the reamer. Do not exceed the tool's maximum pilot diameter of 0.340 inches when selecting pre-drilled pilot holes. Follow all applicable shop safety and hydraulic system service procedures when working on pressurized systems.