1000F 8 PC S&D Flat Drill Set

DRILLCO 1000F 8-Piece S&D Flat Drill Set — Large-Diameter Drilling with 1/2" Reduced Shank

The DRILLCO 1000F 8-piece Straight Shank & Drill (S&D) flat drill set is engineered to extend the large-diameter drilling capability of a standard 1/2" portable drill chuck. Built from premium grade high speed steel (HSS) with a black and bright surface treatment, these drills are designed for contractors and trades professionals drilling low to medium tensile strength materials. The set covers 9/16" through 1" in 1/16" increments, providing eight commonly needed sizes in a single package. Three flats ground onto each shank ensure a secure, slip-resistant grip in handheld power tools, while a common flute and overall length across all eight bits minimizes setup time during tool changes.

Technical Specifications

Available Items

Unlike standard jobber-length drills limited to the chuck's native capacity, the 1000F series uses a 1/2" reduced shank to unlock large-diameter drilling on any standard 1/2" portable drill without requiring a larger chuck or specialized equipment. The black and bright surface treatment provides higher lubricity compared to a plain bright finish, reducing friction and heat buildup during cuts. The common flute and overall length across all eight sizes is a deliberate design choice that minimizes the need to readjust depth stops or tool holders when switching between diameters on the job.

Key Features & Benefits

1/2" Reduced Shank for Standard Drill Chucks

The reduced shank allows drills sized 9/16" through 1" to be used in any standard 1/2" drill chuck, eliminating the need for a larger or specialized chuck. This expands the size range capacity of tools contractors already own, reducing equipment costs on the job site.

3-Flat Shank for Secure Grip

Three flats machined onto the shank provide a positive mechanical lock against the chuck jaws, preventing the bit from rotating or slipping under load in handheld power tools. This is especially important when drilling larger diameters where torque loads are higher.

118° General Purpose Point

The 118° conventional point is well-suited for mild steels and free-machining materials, making it a versatile choice across a wide range of low to medium tensile strength workpieces. It is the standard geometry for general-purpose drilling applications.

Premium Grade HSS Construction

Premium grade high speed steel provides the hardness and toughness needed for repeated use in metalworking applications. HSS is the most commonly used tool material for general-purpose drilling, suitable for low to medium strength steels, aluminum, and other non-ferrous materials.

Black and Bright Surface Treatment

The black and bright finish delivers higher lubricity compared to an uncoated bright finish, reducing friction between the cutting edge and the workpiece. Lower friction translates to reduced heat generation, which helps extend tool life during sustained drilling operations.

Common Flute and Overall Length Across All Sizes

All eight drills in the set share the same flute and overall length, so contractors can switch between diameters without readjusting depth stops, drill press tables, or tool holders. This consistency reduces downtime and setup errors when multiple hole sizes are needed on the same job.

Common Applications

Drilling Large-Diameter Holes with a Portable Drill

The 1/2" reduced shank allows a standard 1/2" portable drill chuck to drive bits up to 1" in diameter, making large-diameter hole-making accessible without specialized equipment.

Drilling Low to Medium Tensile Strength Materials

The HSS construction and 118° point are optimized for low and medium tensile strength materials, providing reliable cutting performance in these common structural and fabrication metals.

Fixed Spindle Machine Operations

The set is also suited for use in fixed spindle machines such as drill presses, where the common length across all bits simplifies depth-stop setup and tool changes.

Multi-Size Hole Patterns Requiring Frequent Bit Changes

Because all eight bits share a common flute and overall length, this set is well-suited for jobs requiring multiple hole diameters in sequence, minimizing adjustment time between tool changes.

Product Documents

• Safety Data Sheet (SDS)
• Drillco Product Linecard

Safety Data Summary

Hazard Information

• During normal operation, 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.
• 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 (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 from grinding is reported 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.
• 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 only with 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.
• 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.
• 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.
• Emergency phone number: CHEM-TEL INC 1-800-255-3924; General Information: 800-851-3821.

Frequently Asked Questions

Q: What chuck size is required to use these drills?
A: All bits in the 1000F8 set have a 1/2" reduced shank, so they fit any standard 1/2" drill chuck — whether on a portable handheld drill or a fixed spindle machine.

Q: What sizes are included in the set?
A: The set includes 8 pieces covering 9/16" through 1" in 1/16" increments.

Q: What materials are these drills designed to cut?
A: The 1000F series is designed for low and medium tensile strength materials. HSS is suitable for most materials in this category, including low to medium strength steels, aluminum, and other non-ferrous materials.

Q: Why do these drills have 3 flats on the shank?
A: The three flats provide a better grip in handheld power tool chucks, preventing the shank from rotating or slipping under the higher torque loads associated with large-diameter drilling.

Q: What point angle do these drills use, and what is it suited for?
A: These drills use a 118° general purpose point, which is suited for mild steels and free-machining materials — the standard geometry for general-purpose drilling in low to medium tensile strength workpieces.

Q: Are speed, feed, and lubrication important when using these drills?
A: Yes. According to Drillco, speed, feed, and lube are all critical to cutting tool performance. Proper parameters will help maximize tool life and cut quality.