Description
Drillco 400NW29 Nitro Heavy Duty Jobber Drill Set 1/16″ – 1/2″
Premium High-Performance Nitro Steel Drill Bits for Tough Metalworking Applications
The Drillco 400NW29 Nitro Heavy Duty Jobber Drill Set is engineered for demanding professionals who require superior strength, durability, and accuracy when drilling through hard metals, stainless steel, alloy steel, cast iron, and tougher industrial materials. With a complete 29-piece fractional range from 1/16" through 1/2", this set is perfect for machinists, metal fabricators, maintenance crews, construction professionals, and anyone who demands reliable cutting performance.
Manufactured from high-grade Nitro (Nitride Surface-Hardened) M2 high-speed steel, these bits deliver increased hardness, reduced friction, and extended tool life. Their 135° split point ensures fast, accurate starts and eliminates “walking,” while the heavy-duty flute design efficiently clears chips for cleaner holes and greater efficiency.
Whether you're working on a drill press, CNC, or hand-held drill, the Drillco 400NW29 set offers exceptional performance and professional reliability.
Features & Benefits
✔ Nitro (Nitride-Hardened) High-Speed Steel
Enhanced hardness and heat resistance for drilling tough materials without premature wear.
✔ 135° Split Point
Prevents walking, ensures quick starts, and reduces additional center punching.
✔ Heavy-Duty Construction
Ideal for high-pressure drilling in stainless steel, alloy steel, manganese steel, cast iron, and harder metals.
✔ Full 29-Piece Fractional Range
Includes all standard jobber sizes from 1/16" to 1/2" by 1/64" increments—complete versatility for machining and fabrication.
✔ Precision-Ground Flutes
Efficient chip removal and smooth cutting action improve accuracy and reduce heat buildup.
✔ Hardened Steel Index Case
Durable metal storage box keeps bits organized, protected, and easy to access.
✔ Professional-Grade Performance
Made for machinists, maintenance techs, metalworkers, industrial shops, contractors, and tool enthusiasts.
What’s Included (29-Piece Set)
Fractional Sizes: 1/16″ to 1/2″ by 1/64″ increments, including:
-
1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4"
-
Continues up to 1/2" with all intermediate 1/64" steps
-
All bits stored in a
- Plastic Drill Pall container
Specifications
| Feature | Details |
|---|---|
| Brand | Drillco |
| Model | 400NW29 |
| Type | Nitro Heavy Duty Jobber Drill Bit Set |
| Material | Nitride surface-hardened M2 High-Speed Steel |
| Point Angle | 135° split point |
| Number of Pieces | 29 |
| Size Range | 1/16″–1/2″ (1/64″ increments) |
| Flute Type | Precision-ground heavy-duty flutes |
| Shank Style | Straight shank |
| Case | Steel indexed storage case |
| Applications | Stainless steel, hardened alloys, metal fabrication, MRO, machining, drilling in difficult metals |
| Ideal For | Machinists, shop technicians, industrial maintenance, contractors |
FAQ – Frequently Asked Questions
1. What materials can these Nitro drill bits handle?
These bits are designed for stainless steel, high-alloy steel, cast iron, titanium, manganese steel, and other tough metals.
2. What advantage does Nitro (nitride hardening) offer?
Nitride surface hardening increases wear resistance, heat resistance, and surface hardness, extending bit life significantly.
3. Does the 135° split point make a difference?
Yes. It provides fast drilling starts, reduces walking, and requires less down force.
4. Can these bits be used with a hand drill?
Absolutely. They work with hand drills, drill presses, and CNC machines, though performance improves with proper lubrication and speed control.
5. Is the case durable?
The set comes in a rigid steel index case designed for shop, field, and industrial environments.
6. Are these bits suitable for woodworking?
They can be used for wood, but they are optimized for metalworking and will outperform standard bits on steel.
