Sgs 56049 Straight-flute Drill Bit No. 49 Solid Carbide

Product Description

The SGS 56049 is a straight-flute drill bit in No. 49 wire size (0.0730 inches diameter), built from micrograin solid carbide with a bright uncoated finish. The 140-degree standard point geometry provides aggressive entry and clean penetration in hard workpiece materials. A web-thinned design reduces thrust force at the cutting tip. With an overall length of 1.6875 inches and a flute length of 0.6875 inches, this is a compact, precision drill intended for metalworking applications where tolerance control is critical. Right-hand cutting direction and a 2-flute configuration are standard for this series. Diameter tolerance is held to +0.0000 to -0.0005 inches.

This drill bit is engineered for use in cast iron, hardened steel, and general steel applications, with secondary suitability for other hardened materials. The Series 106 designation and DIN 6539 compliance make it appropriate for CNC machining centers, drill presses, and precision hand-held applications where small-diameter hole accuracy is required. Maximum drilling depth reaches 0.5470 inches at 3xD. It is well-suited for production environments in machine shops, toolrooms, and industrial maintenance settings where hard-material drilling at tight tolerances is a routine requirement.

Key Features

• Micrograin solid carbide construction for hardness and wear resistance in ferrous materials
• 140-degree standard point angle for fast, clean penetration in hardened steel and cast iron
• Web-thinned geometry reduces cutting thrust and improves chip evacuation
• Diameter tolerance of +0.0000 to -0.0005 inches for tight-tolerance hole work
• DIN 6539 compliant, Series 106
• Bright uncoated finish — no coating buildup to affect dimensional accuracy

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide straight-flute drill bit for machining operations in cast iron, hardened steel, and steel workpieces per DIN 6539 Series 106 standards.

Installation Notes

Installation of this drill bit is performed by machinists or toolroom technicians. Secure the shank firmly in a collet or drill chuck rated for the 0.0730-inch shank diameter before operation. Ensure the drilling machine spindle is fully stopped before changing or seating the bit. Carbide tooling is brittle — avoid side-loading or impact conditions that can cause chipping or fracture.