Value Collection JY4996120 M18x1.25 Straight Flute Tap

Product Description

The VALUE COLLECTION JY4996120 is a straight flute tap designed to cut M18x1.25 metric special internal threads in a wide range of materials. With 4 flutes and a plug chamfer, this tap is suited for through-hole threading operations where chips are pushed ahead or cleared from the cutting zone. Built from high-speed steel with a bright, uncoated finish, it delivers reliable thread-cutting performance in steel, cast iron, aluminum, and similar workpiece materials. The overall length measures 4.03 inches with a thread length of 1.81 inches. It cuts right-hand threads to a 6H class of fit and a D6 thread limit.

This tap is used in machining and metalworking applications requiring precise M18x1.25 metric fine-pitch internal threads. The plug chamfer style makes it well suited for threading through holes rather than blind holes, as the gradual lead-in distributes cutting load across several threads. Machinists, tool-and-die makers, and maintenance technicians working on metric-threaded fastener applications will find this tap appropriate for both production and repair threading operations on manual or CNC machine tools.

Key Features

• M18x1.25 metric special thread form for fine-pitch internal threading
• Plug chamfer distributes cutting load and suits through-hole applications
• 4 straight flutes provide multiple cutting edges and chip clearance
• High-speed steel construction for durability across a range of workpiece materials
• Bright, uncoated finish — compatible with standard cutting fluids and lubricants
• 6H class of fit and D6 thread limit for standard metric tolerance requirements
• Right-hand thread direction for conventional tapping operations

Compatibility

Designed as a standard replacement or production tap for applications requiring M18x1.25 metric special right-hand internal threads to a 6H tolerance class.

Installation Notes

This tap is installed by machinists or maintenance technicians using a tap wrench, tapping head, or CNC rigid tapping cycle. Before tapping, ensure the pilot hole is drilled to the correct diameter for M18x1.25 threads and that the workpiece is securely fixtured. Apply an appropriate cutting fluid or tapping compound throughout the operation to extend tool life and improve thread finish. Never force the tap if resistance increases unexpectedly — back off to clear chips before continuing.