Value Collection MSC-04489605 Straight Flute Tap 1-1/2-6 Unc

Product Description

The VALUE COLLECTION MSC-04489605 is a straight flute tap designed for cutting 1-1/2-6 UNC internal threads in a wide range of workpiece materials. Built from high-speed steel with a bright, uncoated finish, this tap delivers reliable thread-cutting performance in production and maintenance machining environments. The plug chamfer style distributes cutting load across several leading threads, making it well-suited for through-hole applications. With a 3-inch thread length and 6-3/8-inch overall length, the tool provides adequate reach for deep threading operations in a manual or CNC tapping setup. The H4 thread limit ensures dimensional accuracy for 3B class of fit requirements.

This tap is intended for machinists, toolroom technicians, and maintenance mechanics working with large-diameter UNC fastener threads. The 1-1/2-6 UNC specification places it firmly in heavy industrial and structural fabrication work, including machinery frames, flanges, and large mechanical assemblies. The 4-flute straight flute design handles a broad range of materials and is a standard choice for right-hand tapping in both manual tap handles and rigid tapping machines where chip evacuation is not a primary concern.

Key Features

• 1-1/2-6 UNC thread form with right-hand thread direction
• Plug chamfer distributes cutting load for through-hole tapping
• High-speed steel construction provides durability across common workpiece materials
• H4 thread limit for consistent 3B class of fit tolerance
• 4 straight flutes for stable cutting and broad material compatibility
• Bright, uncoated finish suitable for use with standard cutting fluids

Compatibility

Designed as an OEM-style replacement or standard tooling option for applications requiring 1-1/2-6 UNC internal threads with a 3B class of fit and plug chamfer geometry.

Installation Notes

Installation and use of this tap should be performed by a qualified machinist or toolroom technician. Always secure the workpiece and ensure proper alignment before tapping to avoid tap breakage or thread damage. Power down and de-energize any machine tool before tool changes. Use an appropriate cutting fluid for the workpiece material to extend tool life and maintain thread quality.