Osg 8612579 Jobber Length Drill Bit Wire Size 1

Product Description

The OSG 8612579 is a jobber-length drill bit designed for high-performance drilling in demanding metalworking applications. Built from powdered metal with a V coating, this bit features a 130-degree split point with R-thinned web geometry that reduces thrust and improves self-centering on entry. The overall length is 101 millimeters, with a 57-millimeter flute length and a straight-cylindrical shank measuring 6.00 millimeters in diameter. The two-flute spiral configuration with regular helix promotes efficient chip evacuation. At 0.035 pounds, the bit is lightweight and suited to standard drill chucks. Licensed HVAC techs, machinists, and maintenance tradespeople reach for this bit when precision hole placement matters in tough base materials.

The OSG 8612579 is rated for use in steel, alloy steel, cast iron, and nickel alloy workpieces, covering material codes P, K, S, and H. Typical applications include blind hole drilling, cross-hole drilling, standard through-hole drilling, and self-centering starts without a center punch. The bit is a wire gauge size 1, equal to 0.2280 decimal inches or 5.79 millimeters, falling within the 0.2000 to 0.2500 decimal-inch size range of the OSG Series 1950 line. It does not have coolant-through capability, making it appropriate for conventional flood or mist cooling setups in machine shop and maintenance environments.

Key Features

• Powdered metal construction with V coating for extended tool life in ferrous and nickel alloy materials
• 130-degree drill point angle with R-thinned web reduces walking and entry thrust
• Right-hand, regular-spiral, two-flute design promotes reliable chip clearing
• Straight-cylindrical shank fits standard drill chucks without adapters
• Diameter tolerance of plus 0 to minus 0.018 millimeters for close-tolerance hole work
• Rated for blind hole, cross hole, through-hole drilling, and self-centering entry

Compatibility

Designed for use in steel, alloy steel, cast iron, and nickel alloy workpieces per OSG Series 1950 application ratings. Wire size 1 (0.2280 inches, 5.79 millimeters) fits any standard drill chuck or collet accepting a 6.00-millimeter straight shank.

Installation Notes

Installation and use of this drill bit should be performed by a qualified machinist or maintenance technician familiar with rotary cutting tool safety. Secure the straight-cylindrical shank fully in the chuck before beginning a cut, and verify spindle speed matches the recommended surface footage for the workpiece material. Do not exceed the tool diameter tolerance by applying side load or using the bit for reaming. Wear appropriate eye protection and follow applicable OSHA machine guarding requirements when operating drill presses or hand drills.