

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The EAGLE CUTTING TOOL SC400-030-D is a 15/32-inch substitute drill bit manufactured in the USA. Substitute drill bits, sometimes called sub drills, are sized slightly undersize relative to a nominal diameter to allow for reaming or finishing operations that bring a hole to its final precise dimension. This bit is suited for use in machine shops, fabrication environments, and on job sites where tight hole tolerances are required. Trade professionals such as machinists, pipefitters, and ironworkers reach for sub drills when a hole must be opened to a controlled final size without the risk of overcut.
This drill bit is appropriate for applications where a pre-drilled or rough-bored hole needs to be brought close to final dimension before reaming. Common use cases include bolt-hole preparation, bushing installation, and precision hole sizing in metal fabrication. The 15/32-inch sizing positions this bit in a range frequently used in structural and mechanical assembly work. Being USA-made, it is suited for shops and contractors who specify domestic tooling for quality or project compliance reasons.
Designed as an OEM-style substitute drill bit for use in standard drill chucks and drill presses accepting 15/32-inch shank tooling in metalworking and fabrication applications.
Substitute drill bits are installed and operated by machinists and qualified trade professionals using drill presses, magnetic drills, or handheld power drills with appropriate chuck capacity. Secure the workpiece firmly before drilling and use appropriate cutting fluid for metal applications to extend tool life and maintain hole quality. Always wear appropriate eye protection and follow applicable shop safety protocols when operating cutting tools.
Thanks for subscribing!
This email has been registered!