Fein Annular Cutter 63134127041 1/2 Inch Jancy Slugger HSS (1 Inch Cut Depth 3/4 Inch Weldon Shank Pilot Pin Magnetic Drill Coring Tool)

Fein Jancy Slugger 63134127041 1/2-Inch HSS Annular Cutter with Centering Pilot Pin

The Fein Jancy Slugger 63134127041 1/2-Inch HSS Annular Cutter bores burr-free, reamed-quality through-holes across heavy structural steel beams, stainless steel plate, cast iron, and non-ferrous alloys. Precision CNC-machined in Germany from premium high-speed steel with a 1-inch (1.00 in) maximum depth of cut, this 4-tooth hollow core bit cuts only the periphery of the hole to deliver penetration speeds up to 3 times faster than conventional twist drills. Engineered with an industry-standard 3/4-inch straight shank with dual Weldon clamping flats and an included centering pilot pin, this cutter mounts securely into magnetic drill presses for field construction and shop fabrication.

Best Used For:

• Structural Steel Beam Fabrication: Boring precise 1/2-inch structural bolt holes through ASTM A36 and high-strength A572 I-beams and channel flanges on magnetic drills.
• Stainless Plate & Tank Coring: Cutting clean through-holes in 304 and 316 stainless steel assemblies without causing work-hardening or edge burrs.
• Curved Pipe & Overlap Hole Drilling: Drilling on round pipe profiles and executing partial overlap holes on existing fastener cavities without bit deflection.

Key Performance & Safety Features

• German CNC-Ground High-Speed Steel: Proprietary heat-treated HSS metallurgy withstands high frictional temperatures and maintains razor-sharp tooth edges.
• 3X Faster Coring Geometry: Annular hollow-core design removes material as a solid center slug, drastically reducing thrust requirements and cutting cycle time.
• Universal 3/4-Inch Weldon Shank: Standard 0.75-inch straight shank with precision clamping flats fits all standard magnetic drill chucks and arbors.
• Matched Centering Pilot Pin Included: Accurately locates hole centers, channels internal cutting lubricant to tooth tips, and automatically ejects the core slug at breakthrough.
• 4-Tooth Staggered Tooth Grind: Optimizes chip division across cutting faces to minimize vibration, reduce tool chatter, and produce smooth hole sidewalls.

What's Included

• (1) Fein Jancy Slugger 1/2-Inch HSS Annular Cutter (Model 63134127041)
• (1) Matched Steel Centering and Slug Ejector Pilot Pin

Technical Specifications

Pro-Tip: Use internal water-soluble cutting fluid through the pilot pin arbor and maintain constant, smooth feed pressure; easing off mid-cut allows chips to pack behind the 4 teeth, which can cause cutter binding and premature edge dulling.