1000C Series S&D Drill Set

DRILLCO 1000C Series 32-Piece Cobalt S&D Drill Set — Extended Size Range for High-Strength Materials

The DRILLCO 1000C Series Step & Drill (S&D) Set is a 32-piece cobalt alloy drill set designed to expand the size range capacity of a standard 1/2" portable drill chuck. Built from premium grade cobalt alloy (HSCo), these drills are engineered for contractors and trades professionals who need to drill large diameter holes in high-strength materials, including harder steels and stainless steel grades. The set covers 1/2" to 1" by 64ths, with a common flute and overall length across all pieces to minimize adjustment time during tool changes. Speed, feed, and lubrication are all critical to cutting tool performance with this set.

Technical Specifications

Available Items

Unlike standard HSS S&D drills, the 1000C Series uses a premium cobalt alloy composition that increases hardness and wear resistance, making it a superior choice for drilling harder steels and stainless steel grades where HSS tools would wear prematurely. The black and gold surface treatment provides better corrosion resistance and lubricity compared to black oxide finishes, and the common flute and overall length across all 32 pieces reduces setup time when switching between drill sizes on the job.

Key Features & Benefits

1/2" Reduced Shank

The 1/2" reduced shank allows all 32 drills in this set to be used in a standard 1/2" portable drill chuck, eliminating the need for specialized equipment. This makes it practical for contractors working with common portable drills on the job site.

135° Split-Point for Self-Centering

The 135° split-point geometry is self-centering, reducing or eliminating the need for a center punch before drilling. This is especially beneficial when drilling on curved surfaces or in hand-drilling situations on harder materials, improving accuracy and reducing walk.

Premium Grade Cobalt Alloy Construction

Cobalt alloy (HSCo) increases tool hardness and wear resistance compared to standard high speed steel, making these drills well-suited for drilling into harder steels, stainless steel, and other high-strength materials. The cobalt composition is designed for extra long tool life, reducing replacement frequency and downtime.

Black and Gold Surface Treatment

The black and gold surface treatment maximizes lubricity during cutting, which helps reduce friction, heat buildup, and chip adhesion. This treatment also provides better resistance to corrosion and breakage compared to uncoated or black oxide finishes.

Common Flute and Overall Length

All drills in the set share a common flute and overall length, which minimizes the need for depth stop or machine adjustments when changing between drill sizes. This consistency translates directly to faster setups and more efficient workflow on production or fixed spindle machines.

32-Piece Set Covering 1/2" to 1" by 64ths

The comprehensive size range from 1/2" to 1" in 64th-inch increments gives contractors the flexibility to drill a wide variety of large-diameter holes without sourcing individual bits. The full set is organized for quick selection on the job.

Common Applications

Drilling Large Diameter Holes

The S&D design and size range from 1/2" to 1" make this set purpose-built for large diameter hole-making tasks that exceed the capacity of standard jobber drill sets.

Drilling in High-Strength Materials

The cobalt alloy construction provides the hardness and wear resistance needed to drill into high-strength steels and other tough materials where standard HSS drills would fail prematurely.

Fixed Spindle Machine Operations

The common flute and overall length across all pieces make this set well-suited for use with fixed spindle machines, where consistent tool geometry reduces the need for repeated machine adjustments.

Portable Drill Applications

The 1/2" reduced shank allows these large-diameter S&D drills to be used in standard 1/2" portable drill chucks, extending the size range capacity of common job site drills.

Compatible Materials

• High-strength steels
• Harder steel grades
• Stainless steel grades

Product Documents

• Safety Data Sheet (SDS)
• Drillco Product Linecard

Safety Data Summary

Hazard Information

• During normal operation, cobalt cutting tools 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; perform these operations in well-ventilated areas.
• Excessive inhalation of metallic fumes and dusts may cause irritation of eyes, nose, and throat.
• High concentrations of fumes and dusts of iron oxide, manganese, copper, zinc, and lead may result in metal fume fever (metallic taste, throat dryness/irritation, chills, fever lasting 12–48 hours).
• Cobalt is listed as a Group 2B carcinogen by IARC (possibly carcinogenic to humans); Chromium and Nickel are listed as carcinogens by NTP and OSHA.
• Chronic exposure to cobalt dusts, fumes, or mists may cause permanent respiratory diseases including occupational asthma, interstitial pneumonitis and fibrosis (hard-metal disease), and emphysema.
• Skin contact with dust or mist 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.
• California Proposition 65 Warning: This product can expose you to chemicals including Cobalt, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.

Personal Protective Equipment

• Wear safety glasses or goggles with side shields; do not wear contact lenses when handling these materials.
• 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 local exhaust ventilation adequate to limit personal exposure to airborne dust below PEL or TLV levels.
• Clean up using methods that avoid dust generation: vacuum with appropriate filters, wet dust mop, or wet clean-up.
• Store in a dry place; store in a manner that prevents accidental environmental contamination from traces of industrial lubricants or wetting oils.
• 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.
• Incompatible with strong acids and strong oxidizers.
• For powder fires, smother with dry sand, dry dolomite, ABC type fire extinguisher, or flood with water.
• Emergency phone number: CHEM-TEL INC 1-800-255-3924.

Frequently Asked Questions

Q: What size drill chuck is required to use these S&D drills?
A: All drills in the 1000C32 set feature a 1/2" reduced shank, so they can be used in any standard 1/2" drill chuck — including those on common portable drills.

Q: What size holes can this set drill?
A: The set covers a size range of 1/2" to 1" by 64ths, providing 32 incremental sizes for large-diameter hole-making.

Q: Why choose cobalt over standard HSS for S&D drills?
A: Cobalt alloy (HSCo) increases tool hardness and wear resistance compared to standard high speed steel, making it better suited for drilling into harder steels, stainless steel, and other high-strength materials where HSS would wear out faster.

Q: Does the 135° split-point require a center punch before drilling?
A: No. The 135° split-point is self-centering, which reduces or eliminates the need for a center punch and helps prevent the drill from walking, particularly on curved surfaces or harder materials.

Q: Is this set suitable for use with fixed spindle machines?
A: Yes. The set is listed as appropriate for making holes with fixed spindle machines, and the common flute and overall length across all 32 pieces minimizes the need for machine adjustments when changing drill sizes.

Q: What surface treatment do these drills have, and what does it do?
A: The drills feature a black and gold surface treatment, which provides maximum lubricity during cutting and offers better resistance to corrosion and breakage compared to uncoated or standard black oxide finishes.