Value Collection MSC-04665139 Pipe Tap 2-11-1/2 Nps Hss

Product Description

The VALUE COLLECTION MSC-04665139 is a standard pipe tap designed to cut National Pipe Straight (NPS) threads into pre-drilled holes. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap handles the full 2-11-1/2 thread profile across a 1.75-inch thread length. Seven flutes provide chip clearance and cutting efficiency during threading operations on pipe fittings, couplings, manifolds, and similar pipe-threaded components. Plumbers, pipefitters, and maintenance machinists reach for this tap when threading soft to medium-hardness ferrous and non-ferrous materials in both shop and field environments.

This tap is suited for cutting 2-inch NPS threads in applications including pipe flanges, valve bodies, pipe nipple end preparation, and industrial plumbing assemblies. The NPS thread standard is a straight (non-tapered) thread commonly used where a mechanical seal rather than a pressure seal is required. The 1.8750-inch shank diameter and 1.4060-inch square size are sized for use in standard tap wrenches or machine holders appropriate to this tap size.

Key Features

• 2-11-1/2 NPS thread size for straight pipe thread applications
• High-speed steel construction for durability across ferrous and non-ferrous materials
• Seven flutes for efficient chip evacuation during threading
• 1.75-inch thread length accommodates full thread engagement on standard pipe fittings
• Bright, uncoated finish — no coating buildup affecting thread tolerance
• Regular hook geometry for general-purpose threading

Compatibility

Designed for cutting 2-11-1/2 NPS straight pipe threads in components requiring National Pipe Straight thread form. Verify shank diameter of 1.8750 inches fits the tap wrench or machine holder in use before installation.

Installation Notes

This tap is installed by licensed plumbers, pipefitters, or qualified machinists familiar with pipe threading operations. Always secure the workpiece before tapping and use a cutting fluid appropriate to the material being threaded to extend tap life and improve thread quality. Apply steady, even torque and back the tap out periodically to clear chips, especially in blind-hole applications. Follow applicable IFGC or IPC requirements when threading components intended for gas or pressurized plumbing service.