Precision Twist Drill 1010521 Pipe Tap 3/8-18 Npt

Product Description

The PRECISION TWIST DRILL 1010521 is a straight flute pipe tap from the 1541 series, designed to cut internal 3/8-18 NPT threads in pipe and fitting applications. It features a medium hook geometry, which provides controlled chip formation in a variety of metal substrates. The cutting depth reaches 1.5 inches, and the overall tool length is 2-9/16 inches. This tap is sold individually and is intended for use by plumbers, pipefitters, and maintenance machinists who need reliable NPT thread cutting in production or field service work.

This tap is suited for threading pipe connections in plumbing, HVAC piping systems, and industrial maintenance applications where 3/8-18 NPT threads are required. The straight flute design makes it appropriate for use in through-holes and shorter blind-hole situations. It is commonly used with a tap wrench or machine tapping setup in ferrous and non-ferrous materials.

Key Features

• Straight flute geometry with medium hook for controlled chip evacuation
• Cuts standard 3/8-18 NPT taper pipe threads
• 1.5 inch depth of cut accommodates typical pipe wall thicknesses
• Overall length of 2-9/16 inches for compact handling
• 1541 series construction built for consistent thread form accuracy
• Sold individually with a UPC of 698464020261

Compatibility

Designed as an OEM-style replacement or direct-use tap for applications requiring 3/8-18 NPT internal threads in pipe, fittings, and manifold bodies across plumbing and HVAC piping systems.

Installation Notes

This tap is installed by licensed plumbers, pipefitters, or qualified machinists. Before tapping, ensure the workpiece is properly drilled to the correct tap drill size for 3/8-18 NPT threads and securely clamped. Apply cutting fluid appropriate for the workpiece material to extend tap life and improve thread quality. Follow applicable plumbing codes such as the IPC when threading pipe for pressurized fluid systems.

Technical Specifications

• Series: 1541
• Thread Size: 3/8-18 NPT
• Depth of Cut: 1.5 inches
• Overall Length: 2-9/16 inches
• Flute Type: Straight Flute
• Hook: Medium
• Weight: 0.2 pounds
• Sold As: Each

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 1010521