Sgs 51040 Jobber Drill Bit Size 40 Solid Carbide

Product Description

The SGS 51040 is a jobber-length drill bit designed for precision drilling in metal, plastics, and composite materials. Built from micrograin solid carbide, this bit delivers high rigidity and edge retention compared to high-speed steel alternatives. It carries a wire gauge size of 40, a decimal equivalent of 0.098 inches, and a 118-degree faceted point angle that allows for accurate hole initiation without a center punch in many applications. The bright, uncoated finish suits general-purpose drilling where additional coating is not required. Licensed machinists, tool and die technicians, and maintenance tradespeople are the typical end users.

The SGS 51040 is suited for applications requiring tight-tolerance small-diameter holes in precision machining and fabrication environments. The 5xD flute-to-diameter ratio and web-thinned, tapered web design reduce thrust force and chip packing during drilling. It is appropriate for use in drill presses, CNC machining centers, and hand-held power tools where a straight-cylindrical shank is compatible. Conformance to DIN 338 ensures dimensional consistency for shops working to international tooling standards.

Key Features

• Micrograin solid carbide construction for superior hardness and wear resistance over HSS bits
• 118-degree faceted point angle for accurate self-centering hole starts
• Web-thinned tapered web reduces drilling thrust and minimizes heat buildup
• Right-hand spiral flute with regular helix for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Conforms to DIN 338 for dimensional interchangeability

Compatibility

Designed as a jobber-length carbide drill bit conforming to DIN 338, the SGS 51040 fits standard drill chucks and collets sized for a 0.098-inch straight-cylindrical shank across CNC machining centers, drill presses, and compatible handheld power tools.

Installation Notes

Installation is performed by machinists or maintenance technicians experienced with carbide tooling. Secure the shank fully in the chuck or collet before operation, and verify runout is within acceptable tolerance to prevent premature tip fracture. Carbide bits are brittle compared to HSS equivalents and should not be subjected to lateral loading or used in applications with significant vibration without proper workholding. Always ensure spindle speed and feed rate are appropriate for the workpiece material and bit diameter before commencing drilling.