5.6mm 5.7mm OD 250mm Long HSS Straight Shank Twist Drill Bit FUEMZSYR

Description

Product Overview

The FUEMZSYR 5.6mm/5.7mm OD 250mm twist drill bit is crafted from premium high‑speed steel (HSS) that delivers exceptional hardness and heat resistance, allowing it to maintain a sharp cutting edge even under prolonged high‑rpm operation. Its straight shank design provides a rigid connection to the drill chuck, minimizing wobble and ensuring concentric drilling for both metal and wood substrates. The extra‑long 250mm length enables users to reach deep‑set holes that standard bits cannot access, making it an indispensable tool for automotive repair, aerospace component machining, cabinetry, and hobbyist projects alike. The bit’s geometry features a precise 118° point angle and optimized flute design that efficiently evacuates chips, reducing heat buildup and extending tool life. With a diameter tolerance of ±0.01mm, the bit guarantees tight tolerances required in precision engineering, while the robust coating protects against corrosion and wear. This combination of material quality, dimensional accuracy, and thoughtful engineering results in a drill bit that consistently produces clean, burr‑free holes with minimal effort.

Usage

Designed for versatility, this drill bit excels in a wide range of environments. In industrial settings, it can be employed on hardened steel shafts, stainless steel fittings, and alloy components where a reliable, high‑speed cutting tool is essential. In the workshop, woodworkers appreciate the bit’s ability to start clean pilot holes in dense hardwoods, reducing the risk of tear‑out and splintering. The extra length is particularly valuable when drilling through stacked materials, such as laminated panels or multi‑layered composites, where a standard 150mm bit would fall short. The straight shank ensures compatibility with most standard drill chucks, including keyless and keyed varieties, allowing seamless integration into existing toolsets. Whether used with a corded bench drill, a portable cordless driver, or a CNC spindle, the bit maintains its performance, delivering consistent feed rates and surface finishes. For DIY enthusiasts, the bit provides confidence when tackling home improvement tasks such as installing hardware, mounting fixtures, or creating precise openings for electrical wiring.

Why Choose Us

Choosing the FUEMZSYR drill bit means selecting a product backed by rigorous quality control and a commitment to customer satisfaction. Each bit undergoes a multi‑stage heat‑treatment process that enhances core hardness while preserving a tough, wear‑resistant outer layer, ensuring the tool remains sharp longer than generic alternatives. Our manufacturing facilities employ precision CNC grinding to achieve tight tolerances, guaranteeing that every bit meets the exact specifications required for high‑precision drilling. In addition to material excellence, we provide a comprehensive warranty that covers manufacturing defects, reflecting our confidence in the durability of the product. Our dedicated technical support team is available to assist with installation advice, optimal drilling parameters, and troubleshooting, ensuring that users get the most out of their purchase. Moreover, FUEMZSYR maintains environmentally responsible practices, using recyclable packaging and minimizing waste during production, aligning with the values of eco‑conscious professionals.

Key Features

• Premium high‑speed steel construction delivers superior hardness and heat resistance for long‑lasting sharpness.
• Extra‑long 250mm shank reaches deep cavities, reducing the need for multiple bits in a single job.
• Straight shank design provides stable, wobble‑free connection to any standard drill chuck.
• Optimized flute geometry efficiently removes chips, minimizing heat buildup and extending tool life.
• Comes with dedicated customer support and a warranty that covers manufacturing defects for peace of mind.

FAQ

What materials can this drill bit effectively drill?

The bit is engineered for high‑speed steel performance, making it suitable for drilling hardened steel, stainless steel, aluminum, brass, and a variety of wood species including hardwoods and softwoods. Its coating also provides resistance to corrosion, allowing use on treated or painted metal surfaces.

How does the extra length affect drilling performance?

The 250mm length enables users to access deep‑set holes without changing bits, which improves efficiency and maintains consistent alignment. The longer shank also offers better torque transmission, reducing the chance of bit breakage when drilling through tough materials.

Is this bit compatible with standard keyless chucks?

Yes, the straight shank conforms to the standard 1/4‑inch (6.35mm) shank size, making it fully compatible with most keyless and keyed chucks found on cordless drills, bench drills, and CNC machines.

What maintenance is recommended to extend the life of the bit?

After each use, clean the flutes to remove metal chips or wood fibers, then apply a light coat of cutting oil or lubricant. Store the bit in a dry environment to prevent corrosion, and avoid using it at speeds exceeding the recommended RPM for the material being drilled.

Do you offer bulk pricing for larger orders?

Yes, FUEMZSYR provides tiered pricing for bulk purchases. Contact our sales team with the desired quantity, and we will supply a customized quote that includes volume discounts and expedited shipping options.