Precision Twist Drill 1010519 Pipe Tap 1/8-27 Npt 1541

Product Description

The PRECISION TWIST DRILL 1010519 is a straight flute pipe tap in the 1541 series, designed to cut internal 1/8-27 NPT threads in metal workpieces. It features a medium hook geometry that provides controlled cutting action, reducing the risk of chatter and improving thread quality in through-hole and blind-hole applications. The depth of cut is 1.5 inches, and the overall length is 2.125 inches. This tap is used by licensed plumbers, pipefitters, and industrial maintenance technicians to produce leak-resistant pipe threads in ferrous and non-ferrous materials.

This tap is suited for threading pipe fittings, valves, and manifold ports where NPT sealing threads are required. The 1/8-27 NPT thread form is common in low-pressure pneumatic and hydraulic fittings, instrumentation ports, and plumbing supply connections. The straight flute design makes it appropriate for use in through-hole applications where chip evacuation along the flute length is practical. It is typically used in a tap wrench, hand drill press, or machine tapping setup with appropriate cutting fluid.

Key Features

• Straight flute design for controlled chip flow in through-hole tapping
• Medium hook geometry reduces chatter and improves thread form accuracy
• Cuts 1/8-27 NPT threads for standard pipe fitting connections
• 1.5 inch depth of cut accommodates typical fitting wall thickness
• 1541 series construction for consistent tap geometry and thread accuracy

Compatibility

Designed for cutting 1/8-27 NPT internal threads in materials compatible with straight flute tap geometry, including steel, cast iron, aluminum, and brass.

Installation Notes

This tap is installed by machinists, pipefitters, or plumbers using a tap wrench or tapping machine with appropriate cutting fluid applied to the tap and workpiece. Ensure the pilot hole is drilled to the correct NPT tap drill size before threading. Secure the workpiece firmly before tapping to prevent movement and thread misalignment. Follow applicable IFGC or IPC requirements when threading ports in gas or plumbing system components.

Technical Specifications

• Series: 1541
• Thread Size: 1/8-27 NPT
• Flute Type: Straight
• Hook Type: Medium
• Depth of Cut: 1.5 inches
• Overall Length: 2.125 inches
• Weight: 0.95 pounds
• UPC: 698464020223

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 1010519