2000N & 400N 18 PC Tap & Drill Set

DRILLCO 2000N & 400N Tap & Drill Set — Matched UNC Tap and Drill Pairs in One 18-Piece Set

The DRILLCO 2000N & 400N Tap & Drill Set (Item #400NC2018) is an 18-piece high-speed steel set pairing UNC hand taps from the 2000N series with their corresponding 400N Series drills. Manufactured in the United States, the set covers nine common inch tap sizes ranging from 6-32 through 1/2-13, giving contractors and trades professionals a single organized solution for hole preparation and threading operations. Each tap size is matched with its correct drill size, eliminating the need to cross-reference charts or source drills separately. The set is suited for general metalworking applications on low to medium tensile strength materials.

Technical Specifications

Available Items

Unlike sourcing taps and drills separately, this set pairs each 2000N Series tap with its exact corresponding 400N Series drill in a single organized package, reducing setup time and the risk of mismatched tooling. A UNF variant (400NF2018) is also available for fine-thread applications, giving contractors a matched solution for both coarse and fine thread work.

Key Features & Benefits

Matched Tap and Drill Pairs

Each tap size in the set is paired with its corresponding 400N Series drill, ensuring the correct pilot hole diameter is always at hand. This eliminates the need to consult tap drill charts on the job and reduces the chance of using an incorrect drill size that could compromise thread quality.

High-Speed Steel Construction

Both the 2000N taps and 400N drills are manufactured from high-speed steel, the most commonly used tool material for general-purpose metalworking. HSS provides the hardness and wear resistance needed for reliable performance on low to medium tensile strength materials.

Wide Size Range in One Set

The set covers nine UNC tap sizes from 6-32 through 1/2-13, addressing the most frequently encountered inch thread sizes in general construction and fabrication work. Having this range in a single set reduces the number of individual tools a contractor needs to stock and carry.

Made in the United States

The set is manufactured in the United States, which can be a requirement on certain government or commercial projects with domestic content specifications. It also reflects DRILLCO's commitment to quality control in production.

18-Piece Organized Set

With 18 pieces covering 9 tap sizes and their matching drills, the set provides a complete hole preparation and threading solution in one package. An organized set format keeps tooling consolidated and accessible during work.

Common Applications

General Metal Fabrication

The set is suited for drilling and tapping operations on low to medium tensile strength steels and other metals commonly encountered in fabrication work.

Maintenance and Repair Operations (MRO)

The range of UNC sizes from 6-32 through 1/2-13 covers the most common fastener thread sizes, making this set practical for maintenance, repair, and overhaul tasks where various thread sizes may be needed.

Thread Creation in New Material

The 2000N Series hand taps are designed for tapping through holes or blind holes in low to medium tensile strength materials, enabling contractors to create new threaded connections in structural or mechanical components.

Hole Preparation and Threading in Sequence

Because each drill is matched to its corresponding tap, the set supports a streamlined workflow: drill the pilot hole with the included 400N drill, then tap the thread with the paired 2000N tap, without switching between separate tool sets.

Product Documents

• Safety Data Sheet (SDS)
• DRILLCO Product Linecard

Safety Data Summary

Hazard Information

• During normal use, high-speed steel tools do not present inhalation, ingestion, or other chemical hazards.
• Grinding, cutting, machining, burning, or welding these tools 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 and irritation of the throat, chills, and fever, persisting 12 to 48 hours.
• Chromium is listed as a carcinogen by NTP and OSHA; exposure may cause dermatitis, inflammation or ulceration of the upper respiratory tract, and possibly cancer of nasal passages and lungs.
• 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.
• NFPA Hazard Rating: Health 1; Flammability 0; Reactivity 0.
• Fine metal particles produced when ground or sawed can burn; high concentrations in air may present an explosion hazard.
• Chromium and Vanadium are subject to SARA Title III Section 313 supplier notification requirements.

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

• Perform grinding, cutting, or welding operations in well-ventilated areas; use local exhaust ventilation adequate to keep 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.
• 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 traces of industrial lubricants or wetting oils.
• Soiled clothing should be laundered separately.
• Incompatible materials: strong acids, strong oxidizers.
• If symptoms of pulmonary involvement develop, remove from exposure and seek medical attention.
• If eye irritation occurs, flush with copious amounts of water; if irritation persists, seek medical attention.

Frequently Asked Questions

Q: What thread standard does the 400NC2018 set cover?
A: The 400NC2018 set covers UNC (Unified National Coarse) threads. A separate UNF (Unified National Fine) version is available as item 400NF2018.

Q: Which tap sizes are included in the set?
A: The set includes nine UNC tap sizes: 6-32, 8-32, 10-24, 10-32, 1/4-20, 5/16-18, 3/8-16, 7/16-14, and 1/2-13, each paired with its corresponding 400N Series drill.

Q: How many total pieces are in the set?
A: The set contains 18 pieces total, comprising the nine 2000N Series taps and their nine corresponding 400N Series drills.

Q: What material are the taps and drills made from?
A: Both the taps and drills are made from high-speed steel (HSS), suitable for general-purpose metalworking on low to medium tensile strength materials.

Q: Where is this set manufactured?
A: The 400NC2018 set is manufactured in the United States by DRILLCO Cutting Tools.

Q: Is a fine-thread version of this set available?
A: Yes. The 400NF2018 is an 18-piece UNF set covering tap sizes 6-40, 8-36, 10-24, 10-32, 1/4-28, 5/16-24, 3/8-24, 7/16-20, and 1/2-20, also paired with corresponding 400N Series drills.