Osg 1971000 M6x1.00 Straight Flute Tap 6H Hss Plug

Product Description

The OSG 1971000 is a straight flute tap designed for cutting M6x1.00 metric coarse internal threads in a range of ferrous and non-ferrous materials. Built from high-speed steel with a bright, uncoated finish, it features a plug chamfer style that suits through-hole and moderate-depth blind-hole tapping operations. Four flutes provide chip clearance and cutting stability at standard machine tapping feeds. The 6H class of fit delivers a standard metric tolerance suitable for most general-purpose fastener applications. This tap carries a D5 thread limit, indicating controlled oversize for use with standard taps and dies.

The OSG 1971000 is suited for production and maintenance tapping in machining, fabrication, and toolroom environments. Its straight flute geometry is best applied in shorter-chipping materials. Rated material applications include aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel. It fits standard tap holders, collet chucks, and tapping heads used in CNC machining centers, drill presses, and manual tapping arms.

Key Features

• M6x1.00 metric coarse thread form with 6H class of fit for standard tolerance fastener holes
• Plug chamfer style for versatile use in through holes and moderate-depth blind holes
• 4-flute straight flute geometry for chip clearance in short-chipping materials
• High-speed steel construction for durability across a wide range of workpiece materials
• D5 thread limit for controlled oversize within standard tapping parameters
• Bright, uncoated finish - no coating buildup to interfere with close-tolerance thread production

Compatibility

Designed for use in aluminum, cast aluminum, cast iron, high-carbon steel, low-carbon steel, and medium-carbon steel workpieces requiring M6x1.00 metric coarse internal threads to a 6H fit class.

Installation Notes

Installation should be performed by a qualified machinist or tool and die technician familiar with tapping operations. Power down and de-energize the machine before changing tooling. Ensure proper alignment between the tap axis and the drilled pilot hole to avoid tap breakage or thread distortion. Use an appropriate cutting fluid for the workpiece material to extend tool life and maintain thread quality.