DRILLCO 8900A Multi Step Drill — Precision Hole Cutting and Enlarging in Sheet Material
The DRILLCO 8900A Multi Step Drill is a high speed steel step drill bit engineered for cutting or enlarging holes in sheet material. Designed for contractors and trades professionals who require clean, accurate holes across a range of diameters in a single tool, the 8900 series eliminates the need to swap multiple bits during a job. Available in six configurations spanning diameters from 1/8" up to 1-3/8", these step drills deliver versatility across common sheet metal and panel applications. Speed, feed, and lubrication are all critical to performance and tool life with this cutting tool.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | DRILLCO |
| SKU | 890A001 |
| UPC | 045997394794 |
| Country of Origin | China |
| Product Type | Multi Step Drill Bit |
| Series | 8900 |
| Material | High Speed Steel (HSS) |
| Applications | Cutting or enlarging holes in sheet material |
| Technical Tips | Speed, feed, and lube are all critical to cutting tool performance |
Available Sizes
| Item # | Step Number | Size Range | Description |
|---|---|---|---|
| 890A001 | #1 | 1/8" – 1/2" | #1 1/8-1/2 Multi Step Drill - 8900 |
| 890A002 | #2 | 3/16" – 1/2" | #2 3/16-1/2 Multi Step Drill - 8900 |
| 890A003 | #3 | 1/4" – 3/4" | #3 1/4-3/4 Multi Step Drill - 8900 |
| 890A004 | #4 | 3/16" – 7/8" | #4 3/16-7/8 Multi Step Drill - 8900 |
| 890A005 | #5 | 1/4" – 1-3/8" | #5 1/4-1-3/8 Multi Step Drill - 8900 |
| 890A009 | #9 | 7/8" – 1-1/8" | #9 7/8-1-1/8 Multi Step Drill |
The 8900 series step drill consolidates multiple hole sizes into a single tool, reducing bit changes and keeping work moving on the job site. With six distinct size configurations available, contractors can select the exact range that matches their sheet material requirements rather than carrying a full set of individual twist drills.
Key Features & Benefits
High Speed Steel Construction
HSS is the most commonly used tool material for general purpose drilling and is suitable for a broad range of materials including low to medium strength steels, aluminum, and other non-ferrous materials. This makes the 8900 series a reliable choice for everyday sheet material work without requiring specialty tooling.
Multi-Step Design
Each bit covers a range of hole diameters in a single tool, allowing contractors to cut or enlarge holes to multiple sizes without swapping bits. This reduces downtime and simplifies tool inventory on the job.
Six Size Configurations
With options ranging from 1/8" up to 1-3/8", the 8900 series covers a wide span of common hole sizes encountered in sheet material applications. Contractors can select the configuration that best matches the diameter range required for their specific task.
Speed, Feed, and Lubrication Optimization
Proper speed, feed rate, and lubrication are identified as critical factors in cutting tool performance for this series. Applying the correct parameters extends tool life and produces cleaner holes, reducing rework and material waste.
Common Applications
Cutting Holes in Sheet Material
The 8900 series is purpose-built for cutting clean holes in sheet material, making it well suited for electrical, HVAC, and general fabrication tasks where precise hole sizing in panels or sheet metal is required.
Enlarging Existing Holes
The step design allows contractors to enlarge pre-existing holes to a larger diameter in a controlled, incremental manner without the need for a separate reamer or larger twist drill.
Product Documents
Safety Data Summary
Hazard Information
- During normal operation, high speed steel products do not present inhalation, ingestion, or other chemical hazards.
- Grinding, cutting, machining, burning, or welding may release dusts, fumes, or vapors that present health hazards if exposure limits are exceeded.
- Excessive inhalation of metallic fumes and dusts may cause irritation of eyes, nose, and throat; symptoms may include metallic taste, dryness and irritation of the throat, chills, and fever persisting 12 to 48 hours.
- Chromium is listed as a carcinogen by NTP and OSHA; various forms of dermatitis, inflammation and/or ulceration of the upper respiratory tract, and possibly cancer of nasal passages and lungs are associated with chromium exposure.
- Tungsten: some evidence of pulmonary involvement such as cough.
- Vanadium: eye and respiratory tract irritant.
- Cobalt dust is identified as the most probable cause of respiratory diseases including occupational asthma and interstitial fibrosis.
- Skin contact with dust can cause irritation or allergic skin rash due to cobalt sensitization.
- Eye contact may cause irritation.
- Fine metal particles produced when ground or sawed can burn; high concentrations in air may present an explosion hazard.
- NFPA Hazard Rating: Health 1; Flammability 0; Reactivity 0.
Personal Protective Equipment
- Wear safety glasses or goggles with side shields; do not wear contact lenses when handling.
- Cloth or leather gloves are recommended when contact with dust or mist is likely.
- Use an appropriate NIOSH-approved respirator if airborne dust concentration exceeds the applicable PEL or TLV.
- Hearing protection may be required.
- Always use machine guards and wear protective clothing to prevent injury in the event of tool breakage.
- Employer should provide an eye wash station within the immediate work area for emergency use.
Safe Handling
- Use only with local exhaust ventilation adequate to limit personal exposure to airborne dust below PEL or TLV levels.
- Wash hands thoroughly after handling and before eating or smoking; wash exposed skin at end of work shift.
- Do not shake clothing, rags, or other items to remove dust — remove dust by washing or vacuuming with appropriate filters.
- Soiled clothing should be laundered separately.
- Store in a dry place in a manner that prevents accidental environmental contamination from traces of industrial lubricants or wetting oils.
- Clean up spills using methods that avoid dust generation such as vacuum with appropriate filters, wet dust mop, or wet clean up.
- Incompatible with strong acids and strong oxidizers.
- For powder fires, smother with dry sand, dry dolomite, ABC type fire extinguisher, or flood with water.
- Dispose of waste material in compliance with federal, state/provincial, and local environmental regulations; send to an appropriate reclamation facility if available.
Frequently Asked Questions
Q: What is the primary application for the DRILLCO 8900 Multi Step Drill?
A: The 8900 series is designed for cutting or enlarging holes in sheet material.
Q: Which size configuration should I choose for holes between 1/4" and 3/4"?
A: The #3 configuration (SKU 890A003) covers the 1/4" to 3/4" diameter range.
Q: What is the largest hole diameter available across the 8900 series?
A: The #5 configuration (SKU 890A005) reaches up to 1-3/8" in diameter, the largest in the series.
Q: What material are these step drill bits made from?
A: The 8900 series is constructed from High Speed Steel (HSS), the most commonly used tool material for general purpose drilling, suitable for low to medium strength steels, aluminum, and other non-ferrous materials.
Q: Are there any critical operating factors I should be aware of to maximize tool life?
A: Yes — speed, feed, and lubrication are all identified as critical to cutting tool performance. Using the correct parameters for your material will extend tool life and improve hole quality.
Q: How many SKUs are available in the 8900 Multi Step Drill series?
A: Six configurations are available: 890A001 (#1, 1/8"–1/2"), 890A002 (#2, 3/16"–1/2"), 890A003 (#3, 1/4"–3/4"), 890A004 (#4, 3/16"–7/8"), 890A005 (#5, 1/4"–1-3/8"), and 890A009 (#9, 7/8"–1-1/8").