Value Collection JY4877080 Straight Flute Tap 1-3/4-12

Product Description

The VALUE COLLECTION JY4877080 is a straight flute plug tap designed for cutting 1-3/4-12 UNS right-hand internal threads in ferrous and non-ferrous metals. Built from high-speed steel with a bright, uncoated finish, this tap delivers reliable thread-forming performance in a wide range of shop and maintenance applications. The plug chamfer — with several lead threads tapered for gradual thread engagement — makes it well suited for through-hole tapping where adequate chip clearance is available. Six flutes provide rigidity and distributed cutting loads across the full 2-inch thread length, with a 5-inch overall length that accommodates standard tap holders and machines.

This tap is intended for use in machining, maintenance, and repair operations where large-diameter UNS threads are required. The 1-3/4-12 UNS thread form is found in heavy industrial equipment, large fastener applications, and precision mechanical assemblies. It is appropriate for both manual tapping with a tap wrench and machine tapping setups. Machinists, maintenance technicians, and tool-and-die professionals are the primary users. No coolant-through capability is specified, so cutting fluid should be applied externally during operation.

Key Features

• 1-3/4-12 UNS thread form with right-hand direction for standard large-diameter threading
• Six flutes for rigidity and distributed cutting load in demanding thread-cutting applications
• Plug chamfer style allows gradual thread engagement, suitable for through-hole applications
• High-speed steel construction provides good wear resistance across a range of workpiece materials
• H6 thread limit ensures consistent fit within standard tolerance requirements
• Bright, uncoated finish — no additional coating variables to factor into speeds and feeds

Compatibility

Designed for use in applications requiring 1-3/4-12 UNS internal threads. Compatible with standard tap holders and tapping heads sized for large-diameter taps with a 5-inch overall length.

Installation Notes

This tap should be installed and used by qualified machinists or maintenance professionals familiar with tapping large-diameter threads. Secure the workpiece firmly before operation and use an appropriate cutting fluid applied externally, as this tap does not support coolant-through delivery. Align the tap squarely with the hole axis to prevent thread lead error or tap breakage. For machine tapping, verify spindle speed and feed rate are appropriate for the workpiece material and tap size before engaging the cut.