200A 29 PC Set

DRILLCO 200A 29-Piece HSS Drill Bit Set — General Purpose Drilling from 1/16" to 1/2"

The DRILLCO 200A 29-piece drill bit set is a general purpose high speed steel (HSS) jobber-length set covering 1/16" to 1/2" by 64ths, designed for drilling holes in low to medium tensile strength materials across a wide range of conditions. Built on the 200/240/280 series platform, these drills feature a 118° conventional point for rapid penetration and a black oxide surface treatment that reduces friction, prevents chip welding, improves chip flow, and increases abrasion resistance. The set is suited for contractors and trades professionals who need a reliable, comprehensive drill index for everyday general purpose drilling tasks. Speed, feed, and lubrication are all critical to cutting tool performance with this series.

Technical Specifications

Available Items

Material Composition (HSS Alloy — per SDS)

Physical & Chemical Properties (per SDS)

The 200A series differentiates itself from bright-finish alternatives through its black oxide surface treatment, which actively reduces friction and heat damage, prevents chip welding, and extends tool life on low to medium tensile strength materials. Compared to cobalt or TiN-coated options in the Drillco lineup, the 200A set offers a cost-effective, versatile solution for everyday general purpose drilling where extreme hardness or high-heat resistance is not required. The jobber length provides the extra reach needed for most common drilling applications while maintaining adequate rigidity.

Key Features & Benefits

General Purpose HSS Construction

High speed steel is the most commonly used tool material for general purpose drilling and is suitable for most materials including 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 a broad range of everyday drilling tasks, HSS delivers reliable performance without the cost premium of cobalt or carbide tooling.

118° Conventional Point for Rapid Penetration

The 118° conventional point is optimized for mild steels and free-machining materials, enabling fast, efficient hole starting. This geometry is well-suited to the wide range of conditions encountered in general purpose drilling on job sites.

Black Oxide Surface Treatment

The black oxide finish reduces friction and heat damage, prevents chip welding, improves chip flow, and increases abrasion resistance. These combined effects extend tool life compared to uncoated bright-finish drills, particularly when drilling 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. Contractors can rely on this set as a go-to index without needing to stock multiple length variants for standard work.

Comprehensive 29-Piece Size Range

The set covers 1/16" to 1/2" by 64ths, providing every fractional increment needed for general purpose work in a single index. This eliminates the need to source individual bits for common hole sizes, reducing downtime on the job.

Made in the United States

Manufactured domestically by Drillco Cutting Tools, the 200A29 set meets the sourcing requirements of contractors and procurement teams that prioritize U.S.-made tooling.

Common Applications

General Purpose Drilling

Designed for general purpose drilling under a wide range of conditions, making this set appropriate as a standard drill index for everyday trade work.

Drilling in Low to Medium Tensile Strength Materials

The HSS construction and black oxide treatment are specifically optimized for low to medium tensile strength materials, delivering reliable performance without the need for premium coatings.

Mild Steel Drilling

The 118° conventional point is the standard geometry for mild steels and free-machining materials, making these bits well-suited for structural and fabrication drilling tasks.

Aluminum and Non-Ferrous Metal Drilling

HSS is suitable for aluminum and other non-ferrous materials, allowing contractors to use this set across mixed-material applications on the same job.

Wood and Plastic Drilling

General purpose HSS drills are also suitable for wood and plastic, extending the utility of this set beyond metalworking applications.

Compatible Materials

• Low tensile strength steels
• Medium tensile strength steels
• Mild steels and free-machining materials
• Aluminum and non-ferrous metals
• Wood
• Plastic

Product Documents

• Safety Data Sheet (SDS) — Drillco HSS Cutting Tools
• Drillco Product Linecard — Productivity Tooling Solutions for the Metalworking Industry

Safety Data Summary

Hazard Information

• During normal operation, HSS drill bits do not present inhalation, ingestion, or other chemical hazards.
• Grinding, cutting, machining, burning, or welding may release dusts, fumes, or vapors that can 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, chills, and fever persisting 12–48 hours.
• Chromium is listed as a carcinogen by NTP and OSHA; associated with dermatitis, upper respiratory tract inflammation/ulceration, and possible nasal/lung cancer risk.
• Tungsten: some evidence of pulmonary involvement such as cough.
• Vanadium: eye and respiratory tract irritant.
• Cobalt dust (present in some HSS alloys) is associated with respiratory diseases including occupational asthma and interstitial fibrosis.
• Skin contact with dust may cause irritation or allergic skin rash due to cobalt sensitization.
• Fine metal particles produced during grinding 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 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.

Safe Handling

• Use only with local exhaust ventilation adequate to limit personal exposure to airborne dust below PEL or TLV levels.
• Perform grinding, welding, or dust-generating operations in well-ventilated areas.
• 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.
• Clean up spills using methods that avoid dust generation: vacuum with appropriate filters, wet dust mop, or wet clean-up.
• Store in a dry place in a manner that prevents accidental environmental contamination from industrial lubricants or wetting oils.
• 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; use NIOSH-approved respirator for small fires, self-contained breathing apparatus for large fires.
• Do not release fire control runoff to swales or waterways.
• Dispose of in compliance with federal, state/provincial, and local environmental regulations; send to reclamation facility if available.
• Emergency phone: CHEM-TEL INC 1-800-255-3924 | General Information: 800-851-3821

Frequently Asked Questions

Q: What materials can the DRILLCO 200A drill bit set be used on?
A: The 200A set is designed for low to medium tensile strength materials. HSS is suitable for mild steels, free-machining materials, aluminum and other non-ferrous metals, wood, and plastic.

Q: What point angle do these drill bits use, and why does it matter?
A: These bits feature a 118° conventional point, which is the standard geometry for mild steels and free-machining materials, providing rapid penetration in everyday general purpose drilling applications.

Q: What does the black oxide surface treatment do?
A: The black oxide treatment reduces friction and heat damage, prevents chip welding, improves chip flow, and increases abrasion resistance — all of which contribute to longer tool life compared to uncoated bright-finish drills on low to medium tensile strength materials.

Q: What size range does the 29-piece set cover?
A: The set covers 1/16" to 1/2" by 64ths, providing every fractional increment across that range in a single index.

Q: Are speed, feed, and lubrication important when using these drill bits?
A: Yes — Drillco specifically notes that speed, feed, and lube are all critical to cutting tool performance with this series. Proper technique directly affects tool life and hole quality.

Q: When should I choose a cobalt or TiN-coated drill instead of this HSS set?
A: The 200A HSS set is optimized for low to medium tensile strength materials. For harder steels, stainless steel, or high-tensile-strength materials, Drillco offers cobalt (HSCo) and bronze surface treatment options in their lineup that are better suited to those demanding applications.