Value Collection 10-321 Hss Threaded Shank Stub Drill Bit

Product Description

The VALUE COLLECTION 10-321 is a Size 21 high-speed steel (HSS) stub-length drill bit with a threaded shank design. Stub-length bits are shorter than jobber-length bits, which reduces deflection and improves rigidity when drilling in tight clearances or shallow-depth applications. The threaded shank provides a secure, positive connection to compatible chucks and holders, preventing slippage under load. HSS construction delivers adequate hardness and heat resistance for general-purpose metal drilling across a range of ferrous and non-ferrous materials. This bit is suited for machinists, maintenance technicians, and fabricators who need consistent, accurate hole sizing in production or field environments.

The 10-321 is used in general metalworking, maintenance, repair, and fabrication settings. Its stub-length geometry makes it well suited for drill press work, CNC setups, or any application where a standard jobber-length bit would flex or wander. Size 21 corresponds to a specific wire gauge drill diameter commonly called out in aerospace, automotive, and general manufacturing hole specifications. Professionals requiring close-tolerance drilling in metal components will find this bit appropriate for that use case.

Key Features

• High-speed steel (HSS) construction for durability across general-purpose metal drilling
• Stub-length body reduces deflection and improves hole accuracy in shallow or confined applications
• Threaded shank design ensures positive, slip-resistant engagement with compatible tool holders
• Size 21 wire gauge designation for precise, specified hole diameters
• Sold as a single unit (package quantity of 1)

Compatibility

Designed for use with threaded-shank chuck systems and tool holders that accept the corresponding threaded connection. Confirm chuck thread specification matches the 10-321 shank before installation.

Installation Notes

Installation and use should be performed by machinists or qualified technicians familiar with drill press, CNC, or handheld drilling equipment. Ensure the drill bit is fully seated and the threaded shank is properly engaged before operation. Always power down and de-energize the spindle before changing tooling. Use appropriate cutting fluid or coolant for the material being drilled to extend bit life and maintain hole quality.