Accupro T1630676 Spiral Point Tap M18 X 1.5 4 Flutes

Product Description

The ACCUPRO T1630676 is a spiral point tap designed to cut M18 x 1.5 metric threads in through-hole applications. Built from 3% vanadium high speed steel (HSS-V) with an oxide finish, it delivers improved hardness and wear resistance compared to standard HSS. The plug chamfer configuration distributes cutting load across several leading threads, making it suitable for production tapping and general machining work. With 4 flutes and a right-hand thread direction, it pushes chips forward ahead of the tap during the cut. This tap is sized at 108 mm overall length with a 37 mm thread length and a 14.99 mm shank diameter.

This tap is intended for tapping through holes in stainless steel and other ferrous materials where chip evacuation is a priority. The spiral point design drives chips forward rather than packing them in the flutes, which reduces the risk of tap breakage in tough materials. It is commonly used in machine tapping operations on CNC machining centers, drill presses, and tapping machines in job shop and production environments. Manual hand tapping is possible but machine use is the primary application for this style.

Key Features

• M18 x 1.5 metric thread size with right-hand thread direction
• 3% vanadium high speed steel construction for increased wear resistance
• Spiral point geometry pushes chips forward for clean through-hole tapping
• Plug chamfer distributes cutting load across the lead threads
• Oxide finish provides corrosion resistance and mild lubricity
• D6 thread limit for standard tolerance threading applications

Compatibility

Designed as an OEM-style machine tap for M18 x 1.5 through-hole threading operations in stainless steel and similar ferrous materials. Rated for material application in stainless steel per manufacturer specification.

Installation Notes

This tap is installed and used by machinists and tool and die professionals. Always ensure the workpiece is properly secured before beginning a tapping operation. Use appropriate cutting fluid or tapping compound, particularly when working in stainless steel, to reduce heat buildup and extend tool life. Verify spindle speed and feed rate are set for the material and tap size before engaging the tap to avoid breakage.