Precision Twist Drill 1010520 Pipe Tap 1/4-18 Npt

Product Description

The PRECISION TWIST DRILL 1010520 is a straight flute pipe tap in the 1541 series, designed to cut internal tapered pipe threads in metal workpieces. It features a 1/4-18 NPT thread form and a depth of cut of 1.5 inches, with an overall length of 2-7/16 inches. The medium hook geometry controls chip flow during tapping, reducing the risk of clogging or tap breakage in through-hole and short blind-hole applications. This tap is suited for use by machinists, pipefitters, and plumbers threading ports in fittings, valve bodies, manifolds, and similar components where NPT connections are required.

This tap is used in applications requiring a standard 1/4-18 NPT tapered pipe thread. It is appropriate for threading ferrous metals, cast iron, and similar materials in light to medium production and maintenance environments. Typical use cases include threading ports in hydraulic or pneumatic manifolds, pipe fittings, and plumbing fixtures. The straight flute design makes it well suited for through-hole tapping where chips can clear freely from the cut.

Key Features

• Straight flute design for efficient chip evacuation in through-hole pipe thread applications
• Medium hook geometry for controlled cutting action and reduced tap breakage risk
• 1/4-18 NPT thread form for standard tapered pipe thread connections
• 1.5 inch depth of cut accommodates standard pipe thread engagement lengths
• Overall length of 2-7/16 inches suits common hand and machine tapping setups
• 1541 series construction for consistent thread quality in production and maintenance use

Compatibility

Designed as a standard 1/4-18 NPT straight flute pipe tap suitable for use in hand tapping or machine tapping operations where a tapered pipe thread form is required.

Installation Notes

Pipe taps are typically installed by machinists or pipefitters using a tap wrench, tapping head, or CNC machine spindle. Always ensure the workpiece is secured and the pilot hole is drilled to the correct NPT tap drill size before tapping. Apply cutting fluid appropriate to the workpiece material to reduce heat and extend tap life. Back the tap out periodically to break and clear chips when tapping in harder materials.

Technical Specifications

• Series: 1541
• Thread Form: 1/4-18 NPT
• Flute Type: Straight
• Hook: Medium
• Depth of Cut: 1.5 inches
• Overall Length: 2-7/16 inches
• Weight: 0.85 pounds
• UPC: 698464020216

Standard Information

• Brand: PRECISION TWIST DRILL
• Manufacturer Part Number: 1010520