Scientific Cutting Tools PRSS-04 Taper Pipe Reamer

Product Description

The SCIENTIFIC CUTTING TOOLS PRSS-04 is a carbide-tipped taper pipe reamer designed to cut and finish 1/2-14 NPT tapered pipe threads in metal workpieces. It features a straight flute geometry with a right-hand cut and three flutes, producing a clean, accurate taper for leak-free pipe thread seats. The large end diameter measures 0.725 inches and the small end diameter measures 0.670 inches. Overall length is 3.88 inches with a flute length of 1.875 inches and a 1/2-inch straight shank with a 2-inch shank length. The bright finish carbide tip provides extended tool life in production and job-site applications.

This reamer is used by machinists, pipefitters, and plumbers to finish tapered pipe thread ports in manifolds, valve bodies, fittings, and hydraulic or pneumatic blocks. It is suited for both shop and field use where a precise 1/2-14 NPT port must be reamed to proper taper before threading. The straight flute design works well in through-holes and short blind bores. Applications span residential and commercial plumbing, HVAC refrigerant piping, and industrial fluid-power assemblies.

Key Features

• Carbide-tipped cutting edges for extended tool life in steel, cast iron, and non-ferrous materials
• 1/2-14 NPT taper pipe port specification for accurate thread seat preparation
• Three straight flutes with right-hand cut for consistent chip evacuation
• Large end diameter 0.725 inches, small end diameter 0.670 inches
• Bright finish reduces friction and aids chip flow during cutting
• 1/2-inch straight shank compatible with standard drill chucks and collet holders

Compatibility

Designed for use in standard drill presses, lathes, or hand-held drilling equipment accepting a 1/2-inch straight shank. Suitable for finishing 1/2-14 NPT tapered pipe ports in metal workpieces.

Installation Notes

This tool is installed and operated by machinists, pipefitters, or plumbers using a drill press, lathe, or appropriate hand-held power tool. Secure the workpiece firmly before reaming and apply cutting fluid to extend tool life and improve finish quality. Always ream at reduced RPM compared to standard drilling to avoid overheating the carbide tip. Verify the finished port taper with a calibrated NPT plug gauge before assembly.