Snappy Flat Bottom Counterbore Countersink 1/8in Drill Bit x 3/8 Bore – USA Made

Meet Make it Snappy's Snappy Flat Bottom Counterbore Countersink, a compact, USA‑made bit designed to streamline your assembly workflow. With a 1/8" drill size and a 3/8" counterbore, this tool enables you to create a pilot hole and a flat‑bottom recess in a single pass, helping you achieve consistent seating depth without switching bits mid‑task.

Built for practical carpentry and hardware mounting, this bit is well suited for lag screws, lag bolts, washer head screws, and T‑nuts. The 1/4" hex power bit shank lets you quickly drive and drill with standard cordless drivers, reducing tool changes and keeping your project moving smoothly.

What it does

The combination of a precise 1/8" drill and a 3/8" counterbore supports clean, repeatable holes where a flush, flat bottom is desired. This design helps you align fasteners accurately and minimize misalignment, tear‑out, or surface imperfection across multiple fasteners.

• Drive Shank: 1/4" Hex Power Bit Shank
• Drill Size: 1/8" Ø
• Counterbore Size: 3/8" Ø

Practical applications

Ideal for projects where a hidden or flush screw head matters—think furniture hardware, cabinetry, or deck components. The tool supports precise alignment for lag screws, washer head screws, and T‑nuts, helping you achieve a professional finish with each hole you drill.

• One‑step hole creation reduces tool changes and task time
• Creates a flush seat for lag screws, washer heads, and T‑nuts
• Works with standard 1/4" hex power drills and drivers
• Designed for accurate depths and clean edges in wood and similar materials

Quality you can rely on

Made in the USA, this counterbore countersink is built for durability and repeated use in workshop or jobsite settings. Expect solid steel geometry, consistent performance, and a dependable tool that supports efficient, precise screw placement without sacrificing control or speed.

Usage tips

For best results, keep a steady feed, avoid forcing the bit when it binds, and maintain clean, dry material surfaces. Use a pilot hole when starting in denser woods or hard composites, and verify depth with a simple depth stop or mark for consistency across assemblies.