1000A 8 PC S&D Drill Bit Set

DRILLCO 1000A 8-Piece S&D Drill Bit Set — Expand Your 1/2" Chuck's Size Range

The DRILLCO 1000A 8-piece Spade & D (S&D) drill bit set is engineered to extend the large-diameter drilling capability of any standard 1/2" portable drill chuck. Manufactured in the United States from premium grade high speed steel (HSS), this set covers sizes from 9/16" to 1" by 16ths, providing eight commonly needed diameters in a single kit. It is ideally suited for contractors and trades professionals drilling large-diameter holes in low to medium tensile strength materials, as well as for use with fixed spindle machines. A common flute and overall length across all bits in the set minimizes adjustment time during tool changes on the job site.

Technical Specifications

Available Items

Unlike standard jobber-length drills that are limited by chuck capacity, the 1000A series uses a 1/2" reduced shank to unlock large-diameter drilling on any standard 1/2" portable drill — no specialized equipment required. The consistent flute and overall length across all eight bits in the set is a practical advantage over mixed-length sets, reducing setup and adjustment time when switching between diameters on the job.

Key Features & Benefits

1/2" Reduced Shank

The reduced shank design allows all eight bits — including diameters up to 1" — to be used in a standard 1/2" drill chuck. This eliminates the need for a larger, heavier drill to handle large-diameter holes, keeping your existing tool investment productive.

118° General Purpose Point

The 118° conventional point is optimized for mild steels and free-machining materials, making it a reliable choice for the low to medium tensile strength applications this set targets. It provides consistent starting and cutting geometry across the full size range.

Premium Grade HSS Construction

Each bit is manufactured from premium grade high speed steel, delivering the hardness and wear resistance needed for repeated use in metalworking applications. HSS is the most widely used tool material for general purpose drilling in low to medium strength steels, aluminum, and other non-ferrous materials.

Black and Bright Surface Treatment

The black and bright surface treatment provides higher lubricity compared to an uncoated finish, reducing friction and heat buildup during cutting. This contributes to longer tool life and cleaner holes in the materials this set is designed for.

Common Flute and Overall Length

All eight bits share a common flute and overall length, so depth stops and machine settings require minimal adjustment when changing between sizes. This consistency directly reduces downtime during multi-diameter drilling operations.

Made in the United States

The 1000A8 set is manufactured in the United States, providing contractors with a domestically produced cutting tool option for projects with sourcing requirements or quality expectations tied to U.S. production.

Common Applications

Drilling Large Diameter Holes with a Standard Drill

The 1/2" reduced shank allows diameters from 9/16" to 1" to be drilled using a standard 1/2" portable drill chuck, expanding the machine's effective size range without additional equipment.

Low to Medium Tensile Strength Materials

The 118° point and HSS construction are optimized for drilling in low and medium tensile strength materials, making this set a go-to for structural steel, mild steel, and similar substrates common in construction and fabrication work.

Fixed Spindle Machine Operations

The consistent flute and overall length across all bits makes this set well suited for use in drill presses and other fixed spindle machines where repeatable depth and minimal setup adjustment are important.

Multi-Diameter Drilling Operations

With eight sizes from 9/16" to 1" by 16ths in a single set, contractors can address a range of hole sizes in a single job without sourcing individual bits, reducing tool inventory complexity on the job site.

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; associated with dermatitis, upper respiratory tract inflammation/ulceration, and possible nasal/lung cancer risk.
• 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 (component of HSS alloy) 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 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

• Perform grinding, cutting, and machining operations in well-ventilated areas; use local exhaust ventilation adequate to keep airborne dust below PEL/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.
• Emergency phone: CHEM-TEL INC 1-800-255-3924.

Frequently Asked Questions

Q: What shank size do these bits use, and will they fit my existing 1/2" drill?
A: All bits in the 1000A8 set feature a 1/2" reduced shank, which is designed to fit standard 1/2" drill chucks. This allows you to drill holes up to 1" in diameter without needing a larger drill.

Q: What sizes are included in the set?
A: The set includes 8 pieces covering 9/16" to 1" by 16ths (i.e., 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", and 1").

Q: What materials are these bits designed to drill?
A: The 1000A8 set is designed for drilling in low to medium tensile strength materials. The 118° general purpose point and HSS construction are optimized for mild steels and free-machining materials.

Q: Can these bits be used in a drill press or fixed spindle machine?
A: Yes. The source specifically lists making holes with fixed spindle machines as an intended application. The common flute and overall length across all eight bits also minimizes depth-stop adjustment when changing sizes on a drill press.

Q: What is the point angle, and why does it matter?
A: The bits feature a 118° general purpose point, which is the conventional angle suited for mild steels and free-machining materials — the primary target application for this set.

Q: What surface treatment do these bits have, and what does it do?
A: The bits have a black and bright surface treatment, which provides higher lubricity compared to an uncoated finish, helping to reduce friction during cutting.

Q: Are speed, feed, and lubrication important when using these bits?
A: Yes. DRILLCO specifically notes that speed, feed, and lube are all critical to cutting tool performance with this product.