#40 drill bit XXX - R W THOMPSON INC

The R W THOMPSON INC KnKut KK5-40 #40 drill bit is a professional-grade, jobber-length tool engineered for precision drilling in demanding automotive, industrial, and fabrication environments. Built for consistent performance, this bit is essential for creating accurate small-diameter holes required for rivet work, pilot holes, and secure hardware installations in professional workshops.

Key Features

• Precision #40 Sizing (0.10"): Ensures critical accuracy for rivet setting, sheet metal screws, and small fastener pilot holes, maintaining tight diameter control for reliable fitment, especially when used with existing .40 assortments or various xxx bits.
• Professional-Grade KnKut Construction: Engineered for durability and repeated use in mild steel, aluminum, and common shop materials, designed to reduce premature breakage and wear in demanding applications.
• Rigid, Compact Length (2.75"): The shorter jobber length enhances control, minimizes bit wandering, and promotes straight, clean holes, particularly beneficial when working in confined spaces common in vehicle repair.
• Optimized Cutting Geometry: Features a refined point and flute design that helps minimize chatter, reduces walking on start-up, and prevents oversized holes on delicate body panels, brackets, and tabs.
• Versatile Material Performance: Effectively drills through mild steel, non-ferrous metals, plastics, and composite panels commonly found in modern vehicles, machinery, and equipment.

Applications

This drill bit is well-suited for a range of professional tasks in automotive repair, bodywork, trim installation, and light fabrication on passenger cars, trucks, and fleet vehicles. Common uses include drilling pilot holes for sheet metal screws, rivets, harness clamps, and small hardware underhood, underbody, and in interior panels. It is also effective for bracket and tab installations, routing electrical and wiring components, and general shop fixtures where repeatable, small-diameter holes are critical for quality work.

Specifications

• Manufacturer: R W THOMPSON INC KnKut
• Model Number: KK5-40
• Size: #40
• Length: 2.75 in
• Diameter: 0.10 in
• Weight: 0.01 lb