Value Collection MSC-04489639 Tap Set 1-1/2-6 Unc Hss

Product Description

The VALUE COLLECTION MSC-04489639 is a 3-piece tap set designed for cutting 1-1/2-6 UNC internal threads in ferrous and non-ferrous metals. Built from high-speed steel (HSS) with a bright uncoated finish, these taps deliver consistent thread geometry across tapping operations where precision fit matters. Each tap measures 6.375 inches overall length with a 3-inch thread length and features 4 flutes for efficient chip evacuation during cutting. The set is threaded right-hand and carries a thread limit of H4, suited for producing threads within standard tolerance classes. Machinists, pipefitters, and maintenance technicians working on large-diameter fastener applications rely on sets like this for repair and fabrication work.

This tap set is suited for threading operations in industrial maintenance, heavy fabrication, and mechanical repair environments. The 1-1/2-6 UNC specification is common in large structural and mechanical assemblies where coarse unified threads are required. The 4-flute design is appropriate for through-hole and bottoming work in materials where chip control is a factor. The bright finish leaves the HSS substrate uncoated, making it a straightforward general-purpose choice for shops tapping a range of steels and softer alloys.

Key Features

• 1-1/2-6 UNC thread specification for large-diameter coarse unified threading
• High-speed steel construction for durability across common ferrous and non-ferrous materials
• 4-flute geometry promotes chip evacuation and stable cutting action
• H4 thread limit for controlled tolerance threading within standard fit classes
• Right-hand thread direction, standard for the majority of threaded fastener applications
• Bright uncoated finish for general-purpose use without coating-related compatibility concerns

Compatibility

Designed as a general-purpose tap set for cutting 1-1/2-6 UNC right-hand threads in standard tapping applications across industrial and maintenance settings.

Installation Notes

Tap installation and use should be performed by qualified machinists or tradespeople familiar with threading operations and cutting tool safety. Always secure the workpiece properly and use appropriate cutting fluid for the material being tapped to extend tool life and improve thread quality. Power down and de-energize any machinery before tapping operations on installed components. Follow shop-standard speeds and feeds for the material type when using power-driven tapping equipment.