Value Collection MSC-04665105 Pipe Tap 1-1/4 11-1/2 Nps Hss

Product Description

The VALUE COLLECTION MSC-04665105 is a standard pipe tap designed to cut National Pipe Straight (NPS) threads in ferrous and non-ferrous materials. Ground from high-speed steel (HSS) stock, this tap produces a 1-1/4 inch - 11-1/2 thread form with a thread length of 1.75 inches and an overall length of 4 inches. The 5-flute geometry provides a balance of chip clearance and cutting edge support, making it well suited for tapping through-holes in pipe fittings, flanges, and manifold bodies where a straight NPS thread is required. The bright, uncoated finish is appropriate for general-purpose tapping across a range of base materials.

This tap is used in plumbing, pipefitting, and mechanical fabrication applications wherever a 1-1/4 inch NPS threaded port must be cut or reconditioned. Typical scenarios include threading new ports in weld-o-lets, pipe caps, and cast iron or steel fittings, as well as cleaning up damaged threads on existing pipe connections. Plumbers, pipefitters, and industrial maintenance machinists are the primary users. It is suitable for both manual tapping with a tap wrench and low-speed machine tapping when proper alignment fixtures are used.

Key Features

• 1-1/4 inch - 11-1/2 NPS thread form for straight pipe thread applications
• High-speed steel construction provides durability across ferrous and non-ferrous materials
• 5-flute design balances chip evacuation with cutting stability
• 1.75-inch thread length accommodates standard pipe wall engagement
• Bright, uncoated finish for general-purpose use without added coating cost
• Regular hook geometry compatible with manual and low-speed machine tapping

Compatibility

Designed as a general-purpose replacement or shop tap for applications requiring a 1-1/4 inch - 11-1/2 NPS straight pipe thread in standard pipe fittings, valves, and fabricated steel or iron components.

Installation Notes

Tapping operations should be performed by a qualified pipefitter or machinist following established shop safety practices. Use appropriate cutting fluid for the material being tapped to extend tool life and improve thread quality. Secure the workpiece firmly before beginning and align the tap perpendicular to the entry face to avoid tapered or torn threads. Back the tap out periodically to break and clear chips, particularly in deeper or blind-hole applications.