Osg 61530 Screw Machine Drill Bit 3mm Hss 130 Deg

Product Description

The OSG 61530 is a screw machine length drill bit designed for high-performance metal drilling in tight-clearance applications. Built from high speed steel with a coated finish, it measures 3.00 mm (0.1181 inches) in diameter with an overall length of 48.00 mm (approximately 1.89 inches) and a flute length of 16.00 mm (approximately 0.63 inches). The 130-degree faceted drill point provides aggressive cutting geometry suited for hard and demanding materials. Web thinning reduces thrust force at entry, and the tapered web configuration improves chip evacuation. This bit is intended for use by machinists, tool and die professionals, and maintenance technicians working in production or field environments.

The OSG 61530 is well suited for drilling steel, stainless steel, aluminum, aluminum alloy, and aluminum silicate workpieces. Its screw machine length body is shorter than a jobber bit, making it a preferred choice where rigidity and reduced deflection matter in CNC machining centers, drill presses, and manual machine work. The straight-cylindrical shank fits standard drill chucks without adapters. The 5xD flute-to-diameter ratio supports chip clearance during moderate-depth holes in production environments.

Key Features

• 3.00 mm (0.1181 inches) diameter with a tolerance of +0 to -0.014 mm for precise hole sizing
• 130-degree faceted point angle optimized for steel and stainless steel entry
• Web-thinned, tapered web design reduces cutting thrust and improves chip flow
• High speed steel construction with coated finish for wear resistance
• Screw machine length body increases rigidity and reduces deflection versus jobber length
• Right-hand spiral flute, Series 1100, compatible with standard drill chucks

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for standard straight-cylindrical 3.00 mm drill chuck applications in CNC machining, drill press, and hand-held power tool setups where screw machine length geometry is specified.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with proper drill press or CNC machine operation. Ensure the machine spindle is fully stopped and the chuck is secured before inserting or removing the bit. Verify chuck jaw capacity accommodates the 3.00 mm shank diameter before tightening. Coolant-through is not supported on this bit; use appropriate external cutting fluid when drilling stainless steel or high-alloy materials to manage heat buildup.