ANSI M35 Cobalt Twist Drill Bit – 1/2 Inch Max, Three-Flat Shank, Black & Gold, for Metal Drilling

Product Description

The ANSI Amber & Black M35 Cobalt Drill Bit is a high-performance twist drill designed for precision drilling through tough metals. Constructed from high-speed steel with 5% cobalt (M35 grade), it delivers exceptional hardness, heat resistance, and long-term durability. The amber and black oxide finish provides enhanced lubricity, corrosion protection, and better wear visibility.

This bit features a 135° split point tip for fast, accurate starts without walking, and a three-flat shank that ensures secure grip in drill chucks, eliminating slippage during high-torque applications. Manufactured to ANSI standards, it is ideal for professionals seeking dependable inch-size tooling for industrial and commercial use. Produced by XINGRUI, a trusted global manufacturer of precision cutting tools.

Applications (U.S. Market Optimized)

The M35 cobalt drill bit is engineered for tough drilling conditions and is widely used across key American industries:

• Stainless Steel Drilling: Ideal for 304/316-grade steel in fabrication, kitchens, pipelines, and medical equipment

• Metal Fabrication Shops: For clean hole drilling in steel plates, tubing, aluminum sheets, and angle iron

• Automotive Repair & Maintenance: Used to drill through brackets, frames, manifolds, and hardened bolts

• HVAC & Plumbing Work: Drills through ductwork, heater jackets, and non-ferrous metal pipes

• Electrical Installations: Suitable for punching holes in panels, junction boxes, and conduit boxes

• Industrial Equipment Maintenance (MRO): For machinery frames, pumps, and enclosures

• Construction Drilling: Use on steel studs, rebar, joists, and mounting hardware

• DIY/Home Projects: Ideal for stainless sinks, hardware, lawn tools, and home metal repairs.

• Compatible with hand drills, drill presses, mag drills, and CNC equipment. Use cutting oil for optimal performance in stainless steel and hard metals.

Key Features & Advantages

• Material: M35 high-speed steel with 5% cobalt for maximum heat resistance

• Finish: Amber & black oxide – reduces friction, increases durability

• Tip Angle: 135° split point – fast starts, no pre-drilling needed

• Shank Type: Three-flat shank – prevents slipping in keyed/keyless chucks

• Standard: ANSI-compliant inch sizes – consistent length & compatibility

• Construction: Fully ground spiral flutes for smooth chip removal & clean holes

 Size Specifications – Inch Based (Expanded to 1/2")

 Packaging Information

• Individual Packaging: Each bit in a labeled plastic tube (amber/black color visible)

• Set Packaging: 13-pc or 21-pc inch drill bit sets in metal or blow-molded plastic cases

• OEM Options: Custom logo, barcode stickers, blister cards, shrink wrap available

• Export Cartons: Foam-padded inner layers for shipping protection

• MOQ for Private Labeling: 2,000 pcs

Frequently Asked Questions (FAQ)

Q1: What is the benefit of the three-flat shank?
It provides a non-slip grip in drill chucks—perfect for high-torque and handheld applications.

Q2: Can this drill stainless steel?
Yes. It’s designed to drill 304, 316, and hardened metals with high heat resistance and accuracy.

Q3: Is this ANSI standard?
Yes, it follows ANSI inch-based standards, making it fully compatible with American drill systems.

Q4: Can I use it in a cordless drill?
Yes. The three-flat shank fits securely in both keyed and keyless chucks.

Q5: Do you provide OEM branding and packaging?
Absolutely. XINGRUI offers full OEM/ODM services including custom packaging and laser logo marking.