Century Drill Tool 97518 M11x1.50 Tap 3/8 Drill Bit Combo

Product Description

The CENTURY DRILL TOOL CO INC 97518 is a two-piece combo pack combining an M11 x 1.50 metric plug-style tap with a 3/8-inch fractional drill bit. The tap features precision-cut threads that are accurately formed for consistent, exact thread engagement on each pass. Both tools are heat treated and tempered to achieve file-hard thread-cutting edges, extending service life under repeated hand-cutting applications. This combo is suited to trade professionals and knowledgeable DIYers who need a matched drill-and-tap pairing for metric fastener work in metal, plastic, or similar materials.

The 97518 combo is designed for hand-cutting applications where a pilot hole is drilled first and then threaded with the M11 x 1.50 tap. The 3/8-inch drill bit produces the correct clearance hole to follow with the metric tap in a standard tap-and-drill workflow. Typical uses include tapping threaded holes in sheet metal, fabricated brackets, enclosures, and mechanical assemblies encountered in HVAC, electrical, and plumbing trade work.

Key Features

• M11 x 1.50 metric plug-style tap for hand threading applications
• Paired 3/8-inch fractional drill bit for matched pilot-hole sizing
• Heat treated and tempered cutting edges for file-hard durability
• Precision-formed threads for consistent, repeatable thread engagement
• Two-piece combo pack — tap and drill bit included together

Compatibility

Designed as a hand-cutting tap and drill bit combo for use in standard tap wrench setups wherever M11 x 1.50 metric threads are required.

Installation Notes

Installation is performed by hand using a standard tap wrench. Secure the workpiece before drilling the pilot hole, then align the tap squarely to avoid cross-threading. Apply cutting oil to the tap during threading to reduce friction and extend tool life. Reverse the tap periodically to break chips when working through thicker material.