200A 115 PC Drill Set

DRILLCO 200A 115 PC HSS Drill Set — General Purpose Drilling for Low to Medium Strength Materials

The DRILLCO 200A 115-piece drill set is a comprehensive jobber-length high speed steel (HSS) drill collection designed for general purpose drilling across a wide range of conditions. Engineered for contractors and trades professionals who need a single versatile set to cover fractional, number, and letter sizes, this kit spans 1/16" to 1/2" by 64ths and #1–60. The 118° conventional point geometry delivers rapid penetration into low to medium tensile strength materials, while the black oxide surface treatment reduces friction, prevents chip welding, improves chip flow, and increases abrasion resistance for extended tool life.

Technical Specifications

Available Items

The 200A series distinguishes itself from bright-finish alternatives by incorporating a black oxide surface treatment that actively reduces friction and heat damage, prevents chip welding, and improves chip flow — extending tool life on low to medium tensile strength materials where uncoated HSS drills would wear more quickly. Compared to cobalt or carbide options, this set offers a cost-effective, versatile solution for the broad range of everyday drilling tasks encountered on a job site, without the brittleness or cost premium of higher-grade substrates.

Key Features & Benefits

General Purpose High Speed Steel (HSS) Construction

HSS is the most commonly used tool material for general purpose drilling and is suitable for low to medium strength steels, aluminum and other non-ferrous materials, as well as wood and plastic. For contractors who need one set that handles the majority of daily drilling tasks, HSS provides the right balance of toughness and cutting performance.

118° Conventional Point for Rapid Penetration

The 118° conventional point geometry is optimized for mild steels and free-machining materials, enabling fast entry and efficient material removal. This point angle is the industry standard for general purpose work, making these drills immediately familiar and productive in the hands of experienced tradespeople.

Black Oxide Surface Treatment

The black oxide finish reduces friction between the drill and workpiece, prevents chip welding to the cutting edges, improves chip flow out of the flutes, and increases abrasion resistance. The result is longer tool life and more consistent hole quality compared to bright-finish drills when working low to medium tensile strength materials.

Jobber Length for Maximum Versatility

Jobber length is the most common drill length because it provides extra reach while remaining usable in the vast majority of applications. This makes the 200A set the practical default choice for general on-site and shop drilling without the need to stock multiple length variants.

115-Piece Comprehensive Size Range

Covering 1/16" to 1/2" by 64ths and wire gauge sizes #1–60, this set eliminates the need to source individual drills for common hole sizes. Having the full range on hand reduces downtime and keeps projects moving when precise hole sizing is required.

Made in the United States

Manufactured domestically by Drillco Cutting Tools, the 200A set meets the quality expectations of professional contractors who rely on consistent, repeatable performance from their cutting tools.

Common Applications

General Purpose Drilling in Low to Medium Tensile Strength Materials

The primary use case for this set is drilling holes in mild steels, low-carbon steels, and similar low to medium tensile strength metals encountered in everyday construction and fabrication work.

Drilling Aluminum and Non-Ferrous Metals

HSS construction and the black oxide surface treatment make these drills well suited for aluminum, copper, brass, and other non-ferrous materials commonly found in mechanical, electrical, and HVAC work.

Wood and Plastic Drilling

General purpose HSS drills are suitable for wood and plastic substrates, making this set useful across carpentry, finish work, and light fabrication tasks where a single set needs to cover multiple material types.

On-Site and Shop Drilling Operations

The jobber length format is compatible with both handheld portable drills and bench-mounted drill presses, giving contractors flexibility across job site and shop environments without changing tool sets.

Compatible Materials

• Low tensile strength steels
• Medium tensile strength steels
• Mild steel
• Aluminum and aluminum alloys
• Non-ferrous metals (copper, brass, etc.)
• Wood
• Plastic

Product Documents

• Safety Data Sheet (SDS) — Drillco HSS Cutting Tools
• Drillco / WALTER Productivity Tooling Solutions Linecard

Safety Data Summary

Hazard Information

• During normal operation and usage, high speed steel products do not present inhalation, ingestion, or other chemical hazards.
• Operations such as grinding, cutting, machining, burning, and 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; symptoms may include metallic taste, dryness and irritation of the throat, chills, and fever persisting 12–48 hours.
• Chromium (present 0–5% by weight) is listed as a carcinogen by NTP and OSHA; various forms of dermatitis and inflammation of the upper respiratory tract are associated with chromium exposure.
• Tungsten (5–10% by weight): some evidence of pulmonary involvement such as cough.
• Vanadium (0–5% by weight): eye and respiratory tract irritant.
• Cobalt dust (if present from grinding) is associated with respiratory diseases including occupational asthma and interstitial fibrosis.
• 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 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 materials: strong acids, strong oxidizers.
• For powder fires: smother with dry sand, dry dolomite, ABC-type fire extinguisher, or flood with water; do not release runoff from fire control to swales or waterways.
• Emergency phone: CHEM-TEL INC 1-800-255-3924; General Information: 800-851-3821.

Frequently Asked Questions

Q: What size range does the 200A 115-piece set cover?
A: The set covers 1/16" to 1/2" by 64ths and wire gauge sizes #1–60, providing 115 pieces that address the full range of common hole sizes needed in general construction and fabrication work.

Q: What materials can these drills be used on?
A: These drills are designed for low to medium tensile strength materials, including mild steels, aluminum and other non-ferrous metals, wood, and plastic. They are not intended for hardened steels, stainless steel, or other high-tensile-strength materials — cobalt or bronze-treated drills are recommended for those applications.

Q: Why does the black oxide surface treatment matter?
A: Black oxide reduces friction and heat damage, prevents chip welding to the cutting edges, improves chip flow out of the flutes, and increases abrasion resistance — all of which extend tool life compared to bright-finish drills when working low to medium tensile strength materials.

Q: What is the significance of the 118° conventional point angle?
A: The 118° conventional point is optimized for mild steels and free-machining materials, providing rapid penetration. For curved surfaces, hand-drilling on harder materials, or applications where self-centering is critical, a split-point drill (118° or 135°) would be more appropriate.

Q: Are speed, feed, and lubrication important when using these drills?
A: Yes — per Drillco's technical guidance, speed, feed, and lubrication are all critical to cutting tool performance. Using the correct parameters for the material being drilled will maximize tool life and hole quality.

Q: What drill length type is included in this set?
A: All drills in this set are jobber length, which is the most common length because it provides extra reach and can be used in most applications, making it the practical default for general on-site and shop drilling.