--- product_id: 42194126 title: "Drill America 5/16\" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series" brand: "drill america" price: "93 zł" currency: PLN in_stock: true reviews_count: 3 url: https://www.desertcart.pl/products/42194126-drill-america-5-16-cobalt-stubby-threaded-shank-drill-bit store_origin: PL region: Poland --- # Threaded shank for secure fit 5/16" precision diameter 135° heavy-duty split point Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series **Brand:** drill america **Price:** 93 zł **Availability:** ✅ In Stock ## Summary > 🛠️ Drill like a pro, conquer the hardest metals effortlessly! ## Quick Answers - **What is this?** Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series by drill america - **How much does it cost?** 93 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/42194126-drill-america-5-16-cobalt-stubby-threaded-shank-drill-bit) ## Best For - drill america enthusiasts ## Why This Product - Trusted drill america brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sleek gold oxide finish:** Thin oxide layer for corrosion resistance and easy tool ID - • **Built to last under pressure:** 135° split point ensures clean, accurate starts on hard materials - • **Stay clog-free and efficient:** Right-hand cut spiral flutes evacuate chips seamlessly - • **Cut through the toughest metals:** Cobalt steel with enhanced hardness for stainless steel & nickel alloys - • **Precision fit for high-demand tools:** Threaded shank designed for aerospace & automotive-grade equipment ## Overview This 5/16" cobalt stubby drill bit features a threaded shank for secure use in aerospace and automotive tools, a 135° heavy-duty split point for precision drilling in tough metals, and a gold oxide surface treatment for corrosion resistance and easy identification. Its right-hand spiral flutes efficiently clear chips, ensuring smooth, clog-free operation on stainless steel, nickel alloys, and other high-tensile materials. ## Description Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series ## Features - Cobalt steel tools are similar to high-speed steel, but with more cobalt for improved performance when cutting harder metals such as stainless steel or nickel alloys - Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools; performance is similar to uncoated tools - Threaded shank is for use with threaded-spindle tools, often used in aerospace and automotive applications - When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging - Featured with 135 degrees heavy duty split point and surface treated for drilling hard, tough, high tensile strength materials ## Product Details - **Material:** Cobalt - **Cutting Diameter:** 5/16" Inches - **Finish Type:** Black Oxide Cobalt - **Shank Type:** Threaded Shank - **Cutting Angle String:** 135 Degrees ## Images ![Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series - Image 1](https://m.media-amazon.com/images/I/616R-DIHbOL.jpg) ![Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series - Image 2](https://m.media-amazon.com/images/I/51KncJDFQ+L.jpg) ![Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series - Image 3](https://m.media-amazon.com/images/I/51KNPMbuGML.jpg) ![Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series - Image 4](https://m.media-amazon.com/images/I/71yHQj0Z8tL.jpg) ![Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series - Image 5](https://m.media-amazon.com/images/I/71T9yzPN8qL.jpg) ## Available Options This product comes in different **Cutting Angle, Mfg Series Number, Size, Item Length String, Number Of Items, Shank Diameter, Part Number, Finish Types** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ love it. *by A***N on May 26, 2014* Excellent! I have been looking for quite some time for a three eighths diameter drill bit for my tight fit drill and finally got this one and boy how you I sure was impressed and delighted to be satisfied by this product it works for me very well ### ⭐⭐⭐⭐⭐ Five Stars *by M***E on April 13, 2016* WAS GOOD IM HAPPY ### ⭐⭐⭐⭐⭐ Uncommon item for great price with Amazon shipping *by M***L on October 2, 2022* Nice to pick this stuff up through Amazon. Building a couple airplanes and source from this supplier, but sometimes you just need one small drill bit or something and don't want to pay 3x the part value for shipping. ## Frequently Bought Together - Drill America 5/16" Cobalt Stubby Threaded Shank Drill Bit Overall Length 5/8, TSD Series - Drill Bits Short Length Threaded Shank, Combo Series Drill Bit Set 1 Tight Fit Tools 00131 - Drill Bits Short Length Threaded Shank, Short Series Drill Bit Set 3 Tight Fit Tools 00133 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pl/products/42194126-drill-america-5-16-cobalt-stubby-threaded-shank-drill-bit](https://www.desertcart.pl/products/42194126-drill-america-5-16-cobalt-stubby-threaded-shank-drill-bit) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-04-23*