Value Collection 01195718 Screw Machine Drill Bit 4mm

Product Description

The VALUE COLLECTION 01195718 is a cobalt screw machine length drill bit designed for demanding metal drilling applications. Built to a heavy-duty grade, it features a 135-degree split point that reduces walking on contact and requires no center punch in most setups. The 4.00 mm diameter — equivalent to 0.1575 inches — is ground with a right-hand cutting direction and two regular spiral flutes. At 55.00 mm (2.1654 inches) overall length, this stub-style bit fits standard drill chucks and is well suited for use in drill presses, CNC machines, and hand-held power drills where a shorter, stiffer profile is preferred. Machinists, maintenance technicians, and metalworking trades are the primary users.

This bit is sized for the 3.50 mm to 5.00 mm diameter range and is appropriate for drilling steel, stainless steel, cast iron, high-temperature alloys, and other hard or abrasive materials where high-speed steel bits wear prematurely. The screw machine length profile provides added rigidity compared to a jobber-length bit, which reduces deflection and improves hole accuracy in tight-tolerance work. No coolant-through capability is present, so external cutting fluid or mist coolant is recommended when drilling harder materials. Sold individually, with a minimum order quantity of 12 units.

Key Features

• Cobalt construction rated for heavy-duty drilling in hard and abrasive metals
• 135-degree split point reduces thrust and minimizes bit walking at entry
• Screw machine (stub) length at 55.00 mm overall provides increased rigidity over jobber-length bits
• Right-hand, regular spiral flutes with straight shank for standard chuck compatibility
• Straw finish indicates heat-treated cobalt steel with no additional coating
• 4.00 mm diameter (0.1575 inches) for precise metric hole sizing

Compatibility

Designed for use with standard straight-shank drill chucks on drill presses, CNC machining centers, and portable power drills. Fits any chuck rated for the 4.00 mm shank diameter in this bit-size range.

Installation Notes

Always secure the workpiece firmly before drilling to prevent rotation or movement. Ensure the drill chuck is tightened fully around the straight shank before operating. When drilling hard metals without coolant-through, apply cutting fluid manually to the drill point to reduce heat buildup and extend bit life. Consult applicable workplace safety standards for personal protective equipment requirements when operating drilling equipment.