Description
Overview:
The Addax HSS Cobalt Jobber Drill is a durable metal drilling bit for tough materials and everyday workshop use. Made from high‐speed cobalt alloy steel and manufactured to DIN 338, it withstands heat and abrasion when drilling stainless steel and chromium‐nickel alloys. The 8.5 mm diameter with 117 mm overall length suits general-purpose, jobber-length applications. A straight shank fits standard 3‐jaw chucks on cordless drills, mains drills, and pillar drills. Roll‐forged construction provides strength and consistent performance. Common in fabrication, maintenance, and site work, it offers reliable, accurate holes when used at the correct speed with suitable lubrication. The 8.5 mm size is also commonly chosen as the tapping drill for M10 coarse threads, making it a practical pick for steelwork and repairs.
Key Features:
- 8.5 mm diameter and 117 mm overall length for versatile, jobber-length drilling
- High‐speed cobalt steel for excellent heat resistance and wear life in hard metals
- Roll‐forged to DIN 338 for toughness, straightness, and consistent quality
- Straight shank fits standard 3‐jaw chucks on hand drills and drill presses
- Effective on stainless steel, Cr‐Ni alloys, hard steels, and cast iron when used correctly
- Handles sustained drilling with reduced risk of work hardening in stainless
- Re‐sharpenable cutting edges help extend tool life and control costs
- Reliable hole accuracy when centre‐punched or piloted before drilling
- Suitable for workshop fabrication, site installation, and maintenance tasks
- From Addax, providing dependable performance for trade and DIY users
Typical Applications:
Drilling clearance, pilot, and tapping holes in stainless fabrications, brackets, plates, box section, and profiles. Ideal for plant and machinery repairs, metal gates and balustrades, automotive and exhaust work, HVAC ducting and hangers, electrical containment, and general steelwork. Commonly used as the M10 coarse tapping drill size in steel.
Also known as:
HSS‐Co jobber drill, twist drill for metal, jobber‐length cobalt bit, 8.5 mm metal drill, straight‐shank twist bit, cobalt HSS drill, metric jobber drill bit, metalworking drill bit.
Product Specifications
| L&S Part No. | 902 0630 |
|---|---|
| Manufacturer | Addax |
| Unit of Sale | 1 Piece |
| Machine Type | Drills |
| Key Features | - 8.5 mm diameter, 117 mm length for jobber-length drilling - High-speed cobalt steel resists heat and wear - Roll-forged to DIN 338 for strength and quality - Straight shank fits standard 3-jaw chucks - Suitable for stainless steel, Cr-Ni alloys, and hard steels |
