Drill Bits
Electrical Wire Connectors Kit | 10-Piece Set | 1.5mm² to 4mm² Sizes
TBS-03856DRIL-00017
$106.99
Drill Bits
72 products available
Looking for a reliable drill bit set or specialized drill bits for high-volume industrial production and facility maintenance? Compel supplies commercial operations with a comprehensive inventory of trade-grade drilling tools. Our range spans high-speed steel (HSS) micro bits for electronics manufacturing, M35 cobalt twist drills for hardened alloys, multi-stage step drill bit options, and diamond-grit tools for heavy masonry.
By stocking everything from 0.2mm micro-drills to 200mm bi-metal hole saws, we ensure your facility maintains uninterrupted workflow. Every tool in our inventory meets rigorous industrial tolerances for concentricity and wear resistance. When your assembly lines or field service teams need dependable penetration through stainless steel, structural iron, or specialized ceramics, Compel delivers the exact specifications required.
72 products in Drill Bits
Drill Bits
1/4-Inch Drive Extension Bar Set | 4-Piece Metric Sizes (100mm-300mm) | Durable Chrome Vanadium Steel
TBS-03876DRIL-00018
$13.99
-27%Drill Bits
Pipe Threading Kit | Heat-Treated Bits for Enhanced Efficiency | DIY Plumbing Solution
TBS-03896DRIL-00019
$159.99$218.02
Drill Bits
1/4-Inch Impact Driver | High-Torque Power Tool | Compact & Durable Design
TBS-03910DRIL-00020
$11.99
Drill Bits
Custom-Made to Order | Premium 19-Inch Product | Bespoke Design Service
TBS-02882DRIL-00012
$1,408.99
Drill Bits
Woodworking Spade Drill Bit Set | 6-55mm High-Carbon Steel | Durable Flat Wood Boring Tools
TBS-02685DRIL-00001
$10.99
Drill Bits
Diamond Hole Saw Kit | 18-125mm Core Bits for Granite, Stone & Glass | Hex Shank Drill Tool
TBS-02690DRIL-00002
$39.95
Drill Bits
High-Speed Steel Drill Bit Set | 1/4 Hex Shank | 4mm-10mm for Hardened Metal
TBS-02696DRIL-00003
$34.95
Drill Bits
Offset Drill Bit Set | High-Hardness Eccentric Design for Glass, Tile & Stone | 6-14mm Sizes
TBS-02717DRIL-00004
$13.99
-68%Drill Bits
7-Piece Serrated Drill Bit Set | High-Hardness for Glass, Wood & Metal | 3-12mm Sizes
TBS-02721DRIL-00005
$14.99$47.21
-13%Drill Bits
4PCS (6+8+10+12) MM Four Blade Serrated Eccentric Dry Drilling All Ceramic Tile Concrete Marble Glass Superhard Tungsten Steel D
TBS-02724DRIL-00006
$7.95$9.12
Drill Bits
Cobalt Step Drill Bit Set | 3-13mm Hex Shank | For Stainless Steel & Hard Metals
TBS-02725DRIL-00007
$10.99
Drill Bits
Carbide-Tipped Hole Saw | 15-100mm Core Drill Bit for Metal & Stainless Steel
TBS-02735DRIL-00008
$8.95
Drill Bits
BRSCHNITT Diamond Drills Bit M14 Thread 8mm Porcelain Cutter Tile Crowns Drilling core bit Hole Saw For Granite Marble Stone
TBS-02759DRIL-00009
$7.95
Drill Bits
Bi-Metal Hole Saw Kit | M42 Steel | 15-200mm Range | For Wood, Metal & Stainless Steel
TBS-02763DRIL-00010
$11.99
-51%Drill Bits
Diamond Core Drill Bit Set | M14 Thread | 6-70mm for Porcelain, Granite & Marble
TBS-02764DRIL-00011
$5.95$12.07
Showing page 3 of 3 (72 products)
Selecting the Right Substrate: HSS vs. M35 Cobalt
For high-tensile metals like stainless steel and iron, standard carbon steels fail quickly due to heat. Industrial operations rely on M35 Cobalt (HSS-Co) containing 5% cobalt to maintain hardness at elevated temperatures. For lighter materials like aluminum, brass, and plastics, standard High-Speed Steel (HSS) or W6542 HSS provides excellent sharpness and flexibility without the higher cost of cobalt.
- M35 Cobalt (HSS-Co): Best for stainless steel, hardened metals, and continuous production. Typically features a 118-degree or 135-degree split point to prevent walking.
- Standard HSS / W6542: Optimal for aluminum and plastics. Highly resilient against lateral breakage in handheld operations.
Matching Bit Geometry and Shank Designs to the Application
Standard twist drills work well for deep cylindrical holes, but specialized geometries solve specific production challenges. A step drill bit allows operators to drill multiple hole diameters (from 3mm up to 32mm) in sheet metal using a single tool, eliminating frequent bit changes. For large-diameter penetrations up to 200mm, bi-metal hole saws with threaded mounts provide the stability needed for heavy machinery.
- Straight and Round Shanks: Ideal for standard keyed or keyless chucks in stationary drill presses.
- Hex Shanks (e.g., 1/4-inch / 3-13mm): Prevent slippage under high torque and allow quick changes in impact drivers.
- Triangle Shanks: Provide three positive contact points for high-torque drilling in larger step-bit sizes.
- M14 Threaded Mounts: Designed for direct attachment to angle grinders, common in heavy-duty diamond tile chamfering.
Sizing and Length Considerations for Precision and Deep-Hole Work
Choosing the correct diameter range is critical for maintaining structural integrity. Micro-drilling in electronics manufacturing and precision watch repair requires precision HSS sets ranging from 0.2mm to 1.6mm. For deep-reach applications where standard jobber lengths cannot reach, 150mm extra-long HSS bits provide the necessary clearance without sacrificing concentricity.
When working on hard masonry, stone, or ceramic tile, standard cutting edges will dull instantly. Utilizing a specialized masonry drill bit or a diamond-grit chamfering tool (such as 38mm to 50mm beveling bits) ensures clean edges without fracturing the brittle base material.
Buying guide
Choosing Drill Bits
- What is the difference between HSS and M35 Cobalt drill bits when drilling stainless steel?
- M35 Cobalt drill bits contain 5% cobalt alloyed into the high-speed steel, which significantly increases heat resistance. Standard HSS bits will overheat and dull rapidly when cutting stainless steel. M35 bits maintain their hardness at temperatures up to 600 degrees Celsius, making them essential for tough alloys.
- When should I use a step drill bit instead of a standard twist drill?
- A step drill bit is designed specifically for thin materials like sheet metal up to about 5mm thick. It allows you to drill multiple clean, deburred hole sizes (such as 4mm to 32mm) without changing bits or causing the sheet metal to deform. For deep holes or thick structural stock, a standard spiral twist drill is required.
- What tool mount is required for diamond chamfering and tile grinding bits?
- These specialized beveling tools typically feature an M14 internal thread, which is the standard spindle size for professional angle grinders. They are designed for high-RPM dry or wet grinding to smooth and expand holes in ceramic tile and natural stone. They do not fit standard three-jaw drill chucks without a specialized adapter.
- Why do some precision micro drill bits have a 118-degree point angle instead of 135 degrees?
- A 118-degree point angle is the standard for general-purpose drilling in softer materials like wood and soft metals. It penetrates these materials quickly without grabbing. A 135-degree split point is flatter and designed for harder industrial metals, as it prevents the bit from walking across the polished surface before starting the hole.
- How do I select the right size bi-metal hole saw for industrial conduit and pipe installations?
- Match the outer diameter of your conduit or pipe to the nominal size of the hole saw, which ranges from 16mm to 200mm. Ensure your arbor thread matches the hole saw mount, such as an M42 thread. Always check the manufacturer's clearance guidelines, as the actual cut diameter may be slightly larger than the nominal size due to teeth set.