Regal Cutting Tools 027739AS74 Spiral Point Tap M5x.8

Product Description

The REGAL CUTTING TOOLS 027739AS74 is a spiral point tap designed for cutting M5x.8 metric threads in through-hole applications. Built from high speed steel with a chrome finish, this plug-chamfer tap pushes chips forward ahead of the cutting edge, keeping the flutes clear during the threading operation. It features a 6H thread class of fit and a D4 thread limit, making it suitable for close-tolerance metric tapping in production and maintenance environments. With an overall length of 2.38 inches and a thread length of 0.875 inches, it fits standard tap holders and drill press setups used by machinists and tool and die technicians.

This tap is used in metalworking applications where metric M5x.8 through-holes are required. The plug chamfer provides 3 to 5 threads of lead, making it appropriate for starting in a hole or continuing a thread after a taper tap. Right-hand thread direction is standard for conventional clockwise driving. Typical installations include machine component assembly, fixture fabrication, and equipment repair where metric fastener threads are required in steel, aluminum, or similar machinable materials.

Key Features

• M5x.8 metric thread size with right-hand thread direction
• High speed steel construction for durability in general-purpose tapping
• Chrome finish for improved surface hardness and corrosion resistance
• Plug chamfer provides controlled thread lead for through-hole tapping
• 6H class of fit with D4 thread limit for close-tolerance metric applications
• Spiral point design pushes chips forward to reduce clogging in through-holes

Compatibility

Designed as an OEM-style replacement spiral point tap for standard metric through-hole tapping operations requiring M5x.8 thread form.

Installation Notes

Installation and use should be performed by qualified machinists familiar with tapping feeds, speeds, and cutting fluid application. Secure the workpiece fully before beginning the tapping operation and ensure the tap is aligned perpendicular to the drilled hole. Use an appropriate cutting fluid for the workpiece material to extend tap life and improve thread quality. Inspect the tap for wear or chipping before each use and replace if cutting edges appear damaged.