Dormer A-225 HSS Center Drill Bit
The Dormer A-225 HSS Center Drill Bit is designed for accurate center hole drilling, starting holes, and preparing workpieces before drilling, turning, or machining operations. Made for metalworking and workshop applications, this center drill bit helps create a precise starting point to reduce drill wandering and improve hole alignment. Available in multiple sizes from No.1 to No.6, the Dormer A-225 is suitable for machinists, fabrication shops, metalworking users, maintenance teams, and industrial workshops that require dependable center drilling for general machining preparation.
Sold per unit. Brand and stock confirmed on your quote.
Specifications
| Brand | Dormer |
| Model | A-225 |
| Product Type HSS | Center Drill |
| Available Variants Size | No. |
| Size | No.1 1/8" No.2 3/16" No.3 1/4" No.4 5/16" No.5 7/16" No.5A 1/2" No.6 5/8" |
Description
Key Benefits
- HSS center drill bit for accurate starting holes and center drilling work.
- Helps reduce drill wandering and improve hole positioning during machining preparation.
- Available in multiple sizes for different workshop and metalworking requirements.
Ideal Applications
- Center drilling, starting holes, pilot preparation, and machining setup work.
- Metalworking, fabrication, lathe work, workshop, and maintenance applications.
- Use by machinists, technicians, fabricators, and industrial workshop users.
What’s Included
1 pc Dormer A-225 HSS Center Drill Bit


