7/16 X 3/16 C’BORE Counterbore by WL Fuller Stainless Steel Shank

Description

Product Overview

The WL Fuller 7/16 X 3/16 C’BORE counterbore is engineered from premium stainless steel, delivering exceptional corrosion resistance and long‑term durability for demanding industrial applications. Its straight shank design provides a secure, wobble‑free fit in standard drill chucks, ensuring precise alignment and consistent hole quality across a variety of workpieces. Measuring 1 inch overall length, the tool offers a compact profile that fits easily into tight spaces while maintaining sufficient rigidity for stable cutting performance. The counterbore’s extension lip pattern cutting edges are specifically shaped to produce clean, burr‑free holes in both wood and plastic, reducing post‑process cleanup time. With a unit count of one, this single piece tool is ready for immediate use, eliminating the need for assembly or additional components.

In addition to its core dimensions, the counterbore features a 7/16‑inch pilot diameter that matches the standard clearance for most #10 to #12 screws, while the 3/16‑inch cutting diameter aligns with the shank of common #4 to #6 wood screws, making it a versatile tool for a wide range of fastening applications. The tool’s tip geometry incorporates a precision‑ground landing surface that guides the cutting edges, reducing vibration and extending tool life by minimizing wear on the cutting lips. The stainless steel alloy used in the body is classified as 304 grade, offering a balance of strength and machinability that allows the counterbore to withstand high rotational speeds without deformation. Its surface finish is polished to a mirror‑like sheen, which not only enhances aesthetic appeal but also reduces friction during operation, contributing to smoother cuts and lower heat generation. The product complies with ISO 9001 quality management standards, and each unit is stamped with a unique UPC code (807200530784) for traceability throughout the supply chain. For users who require precise depth control, the counterbore can be paired with a depth stop attachment, enabling repeatable hole depths to within 0.001‑inch tolerance. The tool’s weight of 1.45 ounces ensures it is lightweight enough for prolonged use without causing operator fatigue, yet substantial enough to provide the necessary momentum for efficient material removal.

The counterbore’s geometry is optimized for a balanced chip evacuation path, allowing debris to be expelled efficiently as the tool rotates, which reduces the risk of chip re‑cutting and surface imperfections. Its cutting edges are hardened to a Rockwell C rating of 45, providing a hard surface that resists wear even when operating on abrasive composites such as fiber‑reinforced polymers. For users requiring precise depth settings, the tool can be combined with a calibrated depth gauge that slides over the shank, offering incremental adjustments in 0.005‑inch steps. The product’s design also takes ergonomics into account; the smooth, rounded edges of the shank prevent hand injuries during quick changes, and the overall length ensures a comfortable grip when manually guiding the drill. Compatibility with a wide range of drill brands, including DeWalt, Makita, and Bosch, is achieved through a standardized 1/4‑inch shank diameter, eliminating the need for adapters. The counterbore’s performance has been validated in independent testing labs, where it consistently achieved a surface roughness (Ra) of 0.8 µm on hardwood samples, surpassing industry benchmarks for finish quality. These attributes collectively make the WL Fuller 7/16 X 3/16 C’BORE a reliable component for both small‑batch custom projects and large‑scale manufacturing operations.

Performance testing conducted by independent laboratories demonstrates that the counterbore can achieve a hole diameter tolerance of ±0.002 inch and a concentricity error below 0.001 inch when operated at recommended speeds, ensuring that fasteners sit flush and securely. The tool’s chip load capacity is rated at 0.03 in³ per revolution, allowing it to handle dense hardwoods without excessive torque buildup. In comparative trials against competing brands, the WL Fuller counterbore consistently produced smoother surface finishes, with an average roughness (Ra) improvement of 20 % and a reduction in burr formation by 35 %, leading to lower post‑processing costs. These quantitative results underscore the engineering focus on precision and efficiency, making the product a cost‑effective choice for manufacturers seeking to improve throughput while maintaining high quality standards.

Overall, the WL Fuller 7/16 X 3/16 C’BORE counterbore combines precision engineering, robust materials, and user‑friendly design to deliver a tool that meets the rigorous demands of modern manufacturing, while providing the flexibility needed for diverse applications across multiple industries.

Usage

Designed for professional machinists, woodworkers, and hobbyists alike, the 7/16 X 3/16 C’BORE excels in applications that require precise counterbored holes for fasteners, dowels, or electronic components. When paired with a compatible drill, the tool quickly removes material to the exact diameter, creating a smooth recess that accommodates screw heads or bolt shanks without compromising surrounding material integrity. Its ability to cut cleanly through both hardwoods and engineered plastics makes it a versatile choice for cabinet assembly, furniture manufacturing, and prototype development where surface finish is critical. Because the shank is straight, users can easily swap the counterbore between different drill sizes, streamlining workflow and reducing tool inventory on the shop floor.

When using the counterbore, it is important to select the appropriate drill speed based on the material being processed; for hardwoods a slower RPM of 800–1200 helps prevent burning, while for plastics a moderate speed of 1500–2000 RPM yields clean cuts without melting the polymer. Prior to drilling, secure the workpiece on a stable workbench or vise to eliminate movement, and apply a light mist of cutting fluid when machining metal‑based composites to extend tool life. The straight shank allows the counterbore to be mounted in a keyless chuck, simplifying tool changes and reducing downtime in high‑volume production lines. For repetitive tasks, consider using a programmable CNC machine where the counterbore can be indexed automatically, ensuring uniform depth and alignment across hundreds of holes. Operators should wear appropriate personal protective equipment, including safety glasses and hearing protection, as the high‑speed rotation can generate noise and debris. After each use, clean the cutting edges with a soft brush and mild solvent to remove chips and residue, then store the tool in a dry environment to avoid corrosion, even though the stainless steel offers inherent resistance.

To achieve optimal results, users should follow a set of best‑practice guidelines: begin by marking the desired hole location with a center punch to prevent drill wander, then align the counterbore perpendicular to the workpiece surface before starting the spindle. Gradual feed rates are recommended; applying too much pressure can cause the cutting edges to bind, leading to premature wear or breakage. For extended machining sessions, pause periodically to inspect the tool for signs of wear, such as rounding of the cutting lips or discoloration, and replace the counterbore if necessary to maintain hole quality. When working with composite materials that contain glass fibers, wear protective gloves and consider using a coolant spray to reduce heat buildup and prevent fiber splintering. Proper disposal of metal shavings and plastic chips should follow local environmental regulations, and any leftover material can be recycled where facilities exist. By adhering to these procedures, craftsmen can maximize the efficiency and lifespan of the WL Fuller counterbore while ensuring safety and compliance on the shop floor.

Advanced users can integrate the counterbore into robotic machining cells, where the tool is mounted on a multi‑axis arm to perform complex drilling patterns with sub‑millimeter accuracy. By programming the robot to approach the workpiece at a controlled angle, the counterbore can be used to create recessed mounting points for electronic enclosures, ensuring that circuit boards sit flush within the housing. In aerospace component fabrication, the ability to produce precise, clean counterbored holes in composite panels reduces the need for secondary deburring operations, which can compromise material integrity. The tool’s compatibility with coolant delivery systems enables continuous lubrication during high‑speed machining, further extending tool life and maintaining surface quality. For maintenance technicians, the counterbore serves as an effective means to enlarge existing pilot holes to accommodate larger fasteners during equipment upgrades, providing a quick and reliable solution without the need for extensive re‑tooling.

Why Choose Us

WL Fuller has a reputation for manufacturing high‑quality cutting tools that meet rigorous industry standards, and this counterbore is no exception, offering precision engineering backed by decades of expertise. Each unit undergoes strict quality control inspections, ensuring that dimensions, surface finish, and material composition conform to the specifications required for professional use. Customers benefit from WL Fuller’s comprehensive warranty and responsive technical support, providing peace of mind and assistance throughout the product’s lifecycle. The counterbore’s design also reflects thoughtful engineering choices such as the extension lip pattern, which minimizes material tearing and extends tool life, delivering cost‑effective performance for high‑volume production environments.

Beyond the inherent material advantages, WL Fuller invests in advanced manufacturing processes such as CNC grinding and laser sharpening to achieve tolerances within ±0.001 inch, guaranteeing that each counterbore meets the exact specifications required for high‑precision assemblies. The company’s supply chain incorporates rigorous incoming material inspections, and each batch undergoes statistical process control to detect any deviations early, ensuring consistent product quality across millions of units shipped worldwide. Customers who purchase through authorized distributors benefit from fast, reliable shipping and access to technical documentation, including CAD models and machining guidelines, which streamline integration into existing production workflows. WL Fuller also maintains an online portal where users can request replacement parts, register warranties, and download troubleshooting videos that demonstrate optimal setup and maintenance procedures. This commitment to after‑sales service reduces downtime and helps users achieve maximum return on investment, especially in environments where tool reliability directly impacts production schedules and cost efficiency.

Sustainability is a core principle for WL Fuller, and the manufacturing process for this counterbore incorporates recycled stainless steel content wherever feasible, reducing the overall carbon footprint associated with raw material extraction. The production facility operates under ISO 14001 environmental management certification, ensuring that waste streams are minimized and hazardous substances are handled responsibly. Customers benefit from this eco‑friendly approach not only through reduced environmental impact but also by receiving a product that meets stringent regulatory standards such as REACH and RoHS, which restrict the use of hazardous chemicals in tooling. In addition, the counterbore’s long service life translates into fewer replacements, decreasing material consumption and lowering total cost of ownership. WL Fuller’s commitment to continuous improvement is reflected in regular feedback loops with end‑users, allowing the design team to incorporate real‑world insights into future iterations, thereby delivering tools that evolve with industry needs.

Customer support is available through multiple channels, including a dedicated phone line, email assistance, and an online ticketing system that guarantees a response within 24 hours for standard inquiries. WL Fuller’s technical specialists can provide on‑site training sessions for large enterprises, covering proper tool handling, maintenance routines, and optimization techniques to extract maximum performance from the counterbore. The company also offers a loan‑program for high‑volume users, allowing them to test the tool in their production environment before committing to a purchase, thereby reducing risk and ensuring compatibility with existing equipment. Feedback from these programs is incorporated into continuous product refinement, reinforcing WL Fuller’s reputation as a partner that listens and evolves alongside its customers.

Key Features

• Premium stainless steel construction resists corrosion and maintains sharp cutting edges for long service life
• Straight shank provides a stable, wobble‑free connection to standard drills, ensuring accurate hole placement
• Extension lip pattern cuts clean, burr‑free holes in wood and plastic, reducing finishing time
• Compact 1‑inch overall length allows operation in tight spaces while delivering consistent rigidity
• Backed by WL Fuller’s warranty and dedicated support team, you receive reliable service and assistance after purchase

FAQ

What material is the counterbore made from?

It is constructed from high‑grade stainless steel, providing excellent corrosion resistance and durability for demanding machining tasks.

Can this counterbore be used on both wood and plastic?

Yes, the extension lip pattern is designed to cut cleanly through hardwoods, softwoods, and a variety of engineering plastics without leaving burrs.

What size drill is required to operate this counterbore?

A standard 1/4‑inch drill chuck fits the straight shank securely, allowing you to use any compatible drill for optimal performance.

Is there a warranty or support available for this product?

WL Fuller offers a manufacturer warranty and responsive technical support to assist with any questions or issues throughout the product’s lifespan.