Value Collection JY63328777 Straight Flute Tap 2-1/4-16

Product Description

The VALUE COLLECTION JY63328777 is a straight flute tap designed for cutting internal threads in through-holes and accessible blind holes. Built from high-speed steel (HSS) with a bright, uncoated finish, this tap handles 2-1/4-16 UNS thread specifications with a 6-flute geometry and a plug chamfer. The plug chamfer provides a moderate lead-in of 3 to 5 threads, balancing starting ease with thread engagement. The H5 thread limit designation indicates a tolerance class suited for close-fitting thread applications. This tool is installed by machinists, tool-and-die makers, and maintenance technicians working on larger-diameter threading operations.

This tap is suited for production and maintenance machining environments where 2-1/4-16 UNS threads are required. The straight flute design works best in through-hole applications and in materials that produce chips that clear easily, such as cast iron, brass, and free-machining steel. The 6-flute configuration distributes cutting load across more flutes than standard 4-flute taps, improving stability on larger diameter work. Right-hand thread direction is standard for conventional threaded fastener applications.

Key Features

• Thread size: 2-1/4-16 UNS, right-hand thread direction
• 6-flute straight flute geometry for improved cutting load distribution on large diameters
• Plug chamfer with moderate lead-in for balanced starting and thread engagement
• High-speed steel construction for general-purpose threading across a range of materials
• Bright, uncoated finish — no coating buildup to affect thread tolerance
• H5 thread limit for close-tolerance thread fitment

Compatibility

Designed for use in any application requiring a 2-1/4-16 UNS right-hand internal thread. Fits standard tap holders and machine tool spindles sized for large-diameter straight shank taps.

Installation Notes

This tap is intended for use by qualified machinists in manual or CNC tapping operations. Ensure the workpiece is securely fixtured and properly drilled to the correct tap drill diameter before threading. Use appropriate cutting fluid for the workpiece material to extend tool life and improve thread finish. Do not exceed the tap's rated cutting capacity, and back off periodically to break chips when working in tougher materials.