Irwin IR8035 Pipe Tap 1/4-20 Ns 2B Straight Flute Hcs

Product Description

The IRWIN IR8035 is a 1/4-20 NS 2B hand tap designed for cutting right-hand internal threads in a straight-flute configuration. Built from high carbon steel (HCS), this tap features four flutes and a 3-to-5-thread chamfer point style that guides entry and distributes cutting load across multiple teeth. It is driven by hand wrenching with a standard tap wrench, making it a practical tool for maintenance, repair, and fabrication work in plumbing, HVAC, electrical, and general trade applications. The NS thread form designates a non-standard thread profile, and the 2B tolerance class indicates a standard-fit internal thread suitable for general mechanical assembly.

This tap is suited for threading operations in ferrous and non-ferrous materials where a 1/4-20 NS thread is required. Typical applications include field repair of threaded fittings, fabrication of brackets or housings, and re-tapping of damaged threads in trade equipment. The hand-drive design makes it appropriate for portable, on-site use without power tooling. It is sold individually and packaged on a card for point-of-use access.

Key Features

• 1/4-20 NS 2B thread form for non-standard internal thread cutting
• Right-hand direction of cut, compatible with standard tap wrenches
• Straight-flute design with 4 flutes for balanced chip clearance
• 3-to-5-thread chamfer point style for guided thread entry
• High carbon steel (HCS) construction for hardness and edge retention
• Hand-wrench drive — no power tooling required

Compatibility

Designed as a hand tap for use wherever a 1/4-20 NS 2B right-hand internal thread is required; confirm thread form and tolerance class against the mating fastener or fitting specification before use.

Installation Notes

This tap is installed by a mechanic, pipefitter, or trade technician using a standard hand tap wrench. Before tapping, drill the appropriate tap drill size for the 1/4-20 thread and secure the workpiece. Apply cutting fluid to reduce heat and extend tap life. Do not force the tap — back off a half turn periodically to break chips and prevent binding or breakage.

Technical Specifications

• Thread Size: 1/4-20 NS
• Thread Class: 2B
• Direction of Cut: Right Hand
• Flute Style: Straight
• Number of Flutes: 4
• Point Style: 3 to 5 Thread Chamfer
• Drive Type: Hand Wrench
• Material: High Carbon Steel (HCS)
• UPC: 042526080357

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: IR8035