400F 29 PC Drill Pal Set

DRILLCO 400F 29 PC Drill Pal Set — Heavy-Duty HSS Jobber Drill Bit Set for Medium and High Strength Materials

The DRILLCO 400F 29-piece Drill Pal Set is a general purpose high speed steel (HSS) jobber-length drill bit set designed for contractors and trades professionals who require reliable performance across a range of demanding drilling applications. The set covers sizes from 1/16" to 1/2" by 64ths, providing comprehensive coverage for everyday and heavy-duty drilling tasks. Engineered with a 140° split point and a 3-flats shank, these drills are built for use with handheld power tools in medium and high strength materials, including stainless steel and tougher ferrous materials. Made in the United States, this set delivers professional-grade performance in a convenient, organized format.

Technical Specifications

Available Items

The 400F set distinguishes itself from standard jobber drill sets through its 140° split point geometry, which reduces thrust requirements and minimizes bit walking — a critical advantage when drilling into harder ferrous materials or working with handheld power tools where bit control is more challenging. The 3-flats shank provides a positive grip in drill chucks, reducing slippage under load, while the black oxide surface treatment extends tool life by reducing friction and heat buildup compared to bright-finish alternatives.

Key Features & Benefits

140° Self-Centering Split Point

The 140° split point geometry is self-centering, which reduces the thrust required to start a hole and minimizes bit walking on curved or hard surfaces. For contractors drilling with handheld power tools, this translates to more accurate hole placement and less operator fatigue over extended use.

General Purpose HSS Construction

These drill bits are manufactured from general purpose high speed steel, the most widely used tool material for drilling in low to medium strength steels, aluminum, other non-ferrous materials, wood, and plastic. HSS provides a practical balance of hardness and toughness suitable for the broad range of materials encountered on a typical job site.

Black Oxide Surface Treatment

The black oxide finish reduces friction between the bit and workpiece, which helps limit heat buildup during drilling and extends tool life compared to uncoated bright-finish bits. This treatment is well suited for performance on low to medium tensile strength materials.

3-Flats Shank for Reduced Slippage

The 3-flats shank design provides a more secure mechanical grip in drill chucks, significantly reducing the risk of bit slippage under torque. This is especially important during heavy-duty drilling operations where consistent rotational force is applied.

Jobber Length for Versatile Reach

Jobber length is the most common drill length because it provides sufficient reach for the majority of drilling applications while maintaining enough rigidity to minimize deflection. This makes the set suitable for a wide variety of on-site tasks without requiring specialty length tools.

29-Piece Set — 1/16" to 1/2" by 64ths

The comprehensive size range from 1/16" to 1/2" by 64ths ensures contractors have the right bit size on hand for virtually any standard hole requirement. Having a full set organized in a single case reduces downtime spent sourcing individual bits.

Common Applications

Drilling in Medium and High Strength Materials

The 140° split point and HSS construction make these bits well suited for drilling into medium and high strength ferrous materials, including stainless steel and tougher steels, where conventional 118° bits may struggle.

Heavy-Duty Drilling

The heavy-duty construction of these drills makes them appropriate for more demanding applications where standard general-purpose bits may wear prematurely or fail under load.

Handheld Power Tool Drilling

The self-centering split point and 3-flats shank are specifically advantageous when using handheld power tools, where bit walking and chuck slippage are more common concerns than in stationary setups.

General Metalworking and Fabrication

The broad size range and HSS material make this set a practical all-around solution for metalworking tasks on construction sites, in fabrication shops, and in maintenance and repair operations.

Compatible Materials

• Stainless steel and tougher ferrous materials
• Medium and high strength steels
• Low to medium tensile strength steels
• Aluminum and other non-ferrous metals
• Wood
• Plastic

Product Documents

• Safety Data Sheet (SDS) — Drillco HSS Cutting Tools
• Drillco / WALTER Product Linecard

Safety Data Summary

Hazard Information

• During normal use, HSS drill bits do not present inhalation, ingestion, or other chemical hazards.
• Grinding, cutting, machining, burning, or welding these products 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 12–48 hours.
• Chromium (present 0–5% by weight) is listed as a carcinogen by NTP and OSHA; various forms of dermatitis and upper respiratory tract inflammation 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 (not listed as a composition ingredient but referenced in SDS): most probable cause of respiratory diseases including occupational asthma and interstitial fibrosis.
• 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 at all times; 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 depending on the operation.
• 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.
• Wash hands thoroughly after handling and before eating or smoking; wash exposed skin at the end of the 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 with strong acids and 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.

Frequently Asked Questions

Q: What is the advantage of a 140° split point over a standard 118° conventional point?
A: The 140° split point is self-centering, which reduces the thrust required to start a hole and minimizes bit walking — particularly beneficial on curved surfaces and when drilling harder materials with handheld power tools. A standard 118° conventional point is better suited to mild steels and free-machining materials.

Q: Are these drill bits suitable for use in handheld power tools?
A: Yes. The 400F set is specifically listed for drilling with handheld power tools. The 3-flats shank reduces slippage in drill chucks, and the self-centering split point aids accuracy when a drill press or fixed setup is not available.

Q: What surface treatment do these bits have, and what does it provide?
A: These bits feature a black oxide surface treatment, which reduces friction and heat damage during drilling and increases tool life. Black oxide is appropriate for performance on low to medium tensile strength materials.

Q: What are the critical factors for maximizing drill bit performance and life?
A: According to Drillco, speed, feed, and lubrication are all critical to cutting tool performance. Using the correct combination of these parameters for the material being drilled will extend bit life and improve hole quality.

Q: Where are these drill bits manufactured?
A: The DRILLCO 400F 29 PC Drill Pal Set is manufactured in the United States. Drillco Cutting Tools is located in Baton Rouge, Louisiana.