Milwaukee Elec Tool 48-89-2303 Cobalt Drill Bit 3/32 in 5-pack

Product Description

The MILWAUKEE ELEC TOOL 48-89-2303 is a 3/32-inch cobalt twist drill bit sold in a 5-pack, engineered for hard metal drilling applications where standard high-speed steel bits fail prematurely. Built with full cobalt construction, the bit delivers superior heat resistance and core strength when working through stainless steel, hardened metals, and similarly demanding materials. A variable helix design transitions from a 35-degree angle to a 15-degree angle along the flute, accelerating chip evacuation and reducing friction throughout the cut. The 135-degree split point tip starts on contact without walking, producing clean, accurate holes without a center punch. An enhanced tapered web reinforces the bit core and extends flute life across heavy use cycles.

This drill bit is suited for trade professionals and skilled tradespeople working in fabrication, mechanical, HVAC, plumbing, and electrical applications where drilling through hard metals is routine. The 3/32-inch diameter is a common size for pilot holes, sheet metal work, and precision fastener clearances. The 5-pack format supports extended jobsite use or tool-crib stocking. It performs reliably in both handheld and drill-press setups on stainless steel, hardened metals, PVC, and wood.

Key Features

• Full cobalt construction provides superior heat resistance compared to standard high-speed steel bits
• Variable helix transitions from 35 degrees to 15 degrees for optimized chip removal and reduced friction
• 135-degree split point tip starts on contact, eliminating walking without a center punch
• Enhanced tapered web strengthens the core and increases flute durability under load
• Rated for up to 15 times longer service life compared to black oxide drill bits
• Sold in a 5-pack for jobsite backup or inventory stocking

Compatibility

Designed for use in standard 3/32-inch drill chucks across handheld drills and drill presses. Suitable for drilling stainless steel, hardened metals, PVC, and wood.

Installation Notes

Install and removal should be performed with the drill unplugged or the battery removed. Secure the workpiece before drilling to prevent movement and ensure accurate hole placement. Use cutting fluid or cutting oil when drilling stainless steel or hardened metals to reduce heat buildup and extend bit life. Inspect the split point and cutting edges before each use and replace bits that show signs of chipping or excessive wear.