Dormer G136 Countersink Bit (12.4mm, 90°)
Professional Dormer HSS countersink bit (90°, 12.4mm) for precision chamfering. 3-flute ground design doubles as deburring tool.
The Dormer G136 HSS Straight Shank 90° Countersink is a high-speed steel cutting tool designed for precision 90° countersinking in a wide range of materials. With a bright finish and 3-flute ground design, it ensures clean, accurate cuts while doubling as an effective deburring tool.
This countersink bit features a straight shank for secure chuck gripping and all-over grinding for consistent performance. Suitable for both manual and machine use, it delivers professional results in metalworking and fabrication applications.
For specialised requirements, Dormer offers alternative configurations (MTS, 60°/82°/100°, coated versions) available upon request.
Key Features
- 90° countersink angle for standard chamfering
- Bright finish reduces friction
- 3-flute design improves cutting efficiency
- Ground all over for precision performance
- Straight shank ensures secure mounting
- Dual-purpose: countersinking & deburring
- Manufactured from high-speed steel for durability
Need larger quantities? Need additional quantities? Get in touch and we'll arrange it for you.
- Shipped within 0-2 business days
- Shipping to United States: 3-5 business days*
- Free Shipping Included
- Metalworking applications
- Fabrication workshops
- Engine maintenance
- General mechanical engineering
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- Material: High-speed steel (HSS)
- Dimensions: 12.40mm diameter
- Type: Straight shank
- Angle: 90°
- Flutes: 3
- Finish: Bright
- Manufacturing Process: Ground all over
- Weight: 23g
Always follow local regulations and product guidance.
Free standard delivery on US mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For defective items, contact us within 14 days for a replacement or refund.
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