IRWIN INDUSTRIAL TOOL CO - ACH 3016021 21/64 Cobalt Drill Bit

IRWIN INDUSTRIAL TOOL CO - ACH 3016021 21/64 Cobalt Drill Bit

This IRWIN Industrial Tool Co - ACH 3016021 drill bit is a 21/64 x 4-5/8 Cobalt Alloy Steel HSS tool engineered for professional power tools and automotive applications. The cobalt alloy high-speed steel construction provides improved heat resistance and wear life compared with standard HSS, making it suitable for demanding metalworking tasks where consistent performance is required.

Drills

Designed to pair with corded and cordless drill drivers, this 21/64 inch diameter bit delivers precise hole sizing for bracket installation, chassis work, and metal fabrication tasks common in automotive and industrial settings. The 4-5/8 inch length offers reach into deeper panels and assemblies while maintaining rigidity for accuracy. Ground to a sharp point and hardened for prolonged cutting life, the bit helps maintain edge retention under higher speeds and tougher materials.

Professional Power Tools

For technicians and tradespeople using professional power tools, the IRWIN 3016021 provides dependable performance on a range of materials. Its cobalt alloy HSS composition is well suited for drilling harder steels and materials encountered in automotive repair and maintenance. Compatibility with standard drill chucks makes it versatile for shop and field use, supporting both routine maintenance and detailed metalwork.

Benefits include consistent hole quality, increased tool life versus basic HSS bits, and suitability for repetitive tasks in a professional setting. The item is labeled with the exact model number for easy inventory control and compatibility verification within tool kits and parts assortments.

Specifications: Model 3016021; Diameter 21/64 inch; Length 4-5/8 inch; Material Cobalt Alloy High-Speed Steel (HSS); Intended Use Automotive and Metalworking. Fast shipping.