Value Collection MSC-04665113 Pipe Tap 1-1/2-11-1/2 Nps

Product Description

The VALUE COLLECTION MSC-04665113 is a standard pipe tap designed to cut National Pipe Straight (NPS) threads into pre-drilled holes in pipe fittings, flanges, and threaded connection points. Built from high-speed steel (HSS), this tap handles the demands of production threading and field repair work alike. The 7-flute design distributes cutting load evenly, reduces chatter, and produces a cleaner thread form compared to fewer-flute configurations. With a 1-3/4-inch thread length and a shank diameter of 1.5 inches, this tap is sized for heavy-duty applications where a full-length thread engagement is required. The bright, uncoated finish suits general-purpose threading without added coating cost.

This tap is used in plumbing, pipefitting, HVAC, and industrial maintenance applications wherever a 1-1/2-11-1/2 NPS internal thread must be cut or restored. Typical scenarios include tapping cast iron, carbon steel, or malleable iron pipe fittings, valve bodies, and manifold blocks. It is appropriate for both shop-floor production work and field service use by licensed plumbers, pipefitters, and mechanical contractors working on pipe systems that require NPT or NPS thread forms at the 1-1/2-inch nominal size.

Key Features

• High-speed steel construction for durability across ferrous and non-ferrous materials
• 7-flute geometry for reduced cutting force and improved thread finish
• 1-3/4-inch thread length provides full thread engagement on standard pipe fittings
• 1.5-inch shank diameter and 1.125-inch square drive for use with standard tap wrenches and machine holders
• Bright, uncoated finish suitable for use with standard cutting oils and fluids
• NPS thread standard for straight (non-tapered) pipe thread applications

Compatibility

Designed for cutting 1-1/2-11-1/2 NPS straight pipe threads in compatible ferrous and non-ferrous workpieces; verify material hardness and pre-drill size against NPS tap drill charts before use.

Installation Notes

Pipe taps are installed by licensed plumbers, pipefitters, and qualified machinists using a calibrated tap wrench or machine tapping setup. Always apply a suitable cutting fluid for the workpiece material and back off the tap periodically to clear chips and prevent binding. Ensure the hole is drilled to the correct NPS tap drill diameter before threading. Worn or damaged taps should be replaced rather than forced, as tap breakage in a workpiece can require costly extraction procedures.