Sgs 51079 Solid Carbide Jobber Drill Bit No. 79

Product Description

The SGS 51079 is a solid carbide jobber length drill bit sized to wire gauge No. 79, with a decimal inch diameter of 0.0145 inches (0.37 mm). It features a 118-degree faceted drill point and a two-flute right-hand spiral cut geometry. The bit is manufactured from micrograin solid carbide and carries a bright, uncoated finish. The shank is straight-cylindrical with a shank diameter matching the drill diameter at 0.0145 inches. Overall length is 0.75 inches with a flute length of 0.1875 inches. Installed by machinists, tooling technicians, and precision fabricators, this bit is built for small-diameter drilling applications requiring tight tolerances and consistent geometry.

The SGS 51079 is suited for drilling composite workpiece materials where small-diameter precision holes are required. The web-thinned, tapered web construction reduces thrust load during entry, improving cut initiation in hard or layered composite substrates. The 5xD flute-to-diameter ratio supports chip evacuation in deep-relative-to-diameter passes. This bit fits production, maintenance, and prototype applications where wire-gauge drill sizes are specified by design drawings or engineering callouts. It conforms to DIN 338 standards and is part of the SGS Series 101 jobber length line.

Key Features

• Micrograin solid carbide construction for extended tool life in composite materials
• 118-degree faceted point for clean entry and reduced walking on flat surfaces
• Web-thinned tapered web reduces axial thrust during drilling
• Right-hand, two-flute spiral geometry supports chip clearing in small-diameter bores
• Straight-cylindrical shank fits standard collets and drill chucks rated for the diameter
• Conforms to DIN 338 dimensional standard

Compatibility

Designed as an OEM-style replacement or direct application drill bit for use in standard collet chucks, precision drill chucks, or CNC toolholders accepting a 0.0145-inch straight shank. Primary workpiece material specified as composite.

Installation Notes

This bit is installed by machinists or precision fabricators using collet-style or precision Jacobs-style chuck holders. Ensure the spindle and toolholder are fully stopped and de-energized before bit changes. At this diameter, excessive feed pressure will snap the bit; use a low-feed, high-RPM strategy consistent with carbide tooling recommendations for composite materials. Handle carbide bits carefully to avoid chipping the flutes or point during storage and setup.