---
product_id: 512589482
title: "CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece"
brand: "cocud"
price: "HK$115"
currency: HKD
in_stock: true
reviews_count: 2
url: https://www.desertcart.hk/products/512589482-cocud-solid-carbide-drill-bits-3-1mm-diameter-k35-tungsten
store_origin: HK
region: Hong Kong
---

# 91.5HRA Hardness 3.1mm Diameter 35mm Flute Length CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece

**Brand:** cocud
**Price:** HK$115
**Availability:** ✅ In Stock

## Summary

> 🔧 Drill Like a Pro – Elevate Your Craftsmanship!

## Quick Answers

- **What is this?** CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece by cocud
- **How much does it cost?** HK$115 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/512589482-cocud-solid-carbide-drill-bits-3-1mm-diameter-k35-tungsten)

## Best For

- cocud enthusiasts

## Why This Product

- Trusted cocud brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **User-Friendly Tips:** Maximize lifespan with proper usage and cooling techniques.
- • **Enhanced Chip Removal:** Spiral flutes ensure efficient metal chip evacuation.
- • **Precision Engineering:** Designed for flawless drilling in stainless steel and alloys.
- • **Versatile Applications:** Perfect for CNC lathes, drill presses, and more.
- • **Durable Tungsten Carbide:** Crafted from K35 tungsten for unmatched strength and longevity.

## Overview

The CoCud Solid Carbide Drill Bit is a high-performance tool designed for precision drilling in tough materials like stainless steel and alloys. With a diameter of 3.1mm and a flute length of 35mm, this drill bit boasts a hardness rating of 91.5HRA, ensuring durability and efficiency. Its spiral flutes facilitate quick chip removal, making it ideal for use in CNC lathes and drill presses. Proper usage tips are included to extend the tool's lifespan.

## Description

Attributes:* Drilling Diameter: 3.1mm / 0.122"* Tool Flute Length: 35mm / 1.38"* Shank Diameter: 3.1mm / 0.122"* Overall Length: 60mm / 2.36"* Material: K35 Tungsten Carbide* Average Cobalt Content: 10%* Tool Flute Type: Spiral* Hardness: 91.5HRA* Outer Edge Point Angle: 120 DegreeWhat Is Included:* 1 Piece x Carbide Drill BitsApplications & Features:--- Widely used for precision drilling of alloy steel, stainless steel, tool steel, carbon steel, cast iron, copper, hard plastic in maintenance departments, machine shops, and other industries. Use on machining centers, CNC lathes, drill presses and bench drills. Selecting the correct lubricant can facilitate cutting or cooling, making cutting easier, improving dimensional accuracy and extending tool life. Drill metal with high hardness, the rotational speed should be slower than normal drilling.--- K35 tungsten carbide is a micro grain tungsten-cobalt alloy with an average cobalt content of 10%. The solid carbide drill bits has high hardness (91.5HRA), wear resistance, corrosion resistance, high strength, good bending resistance and high heat resistance. Provides faster cutting speeds than other substrates and is harder but more brittle. Carbide material with good drilling properties ensures high working efficiency. Sharp spiral flutes provide fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, which saves time and effort in operation.Useful Tips:--- Keep cool and gentle when using. Not recommended for use with a hand drill (easy to shake, poor stability). Proper use can greatly extend the working life of twist drill bits. If there is a problem with chip evacuation, go back in time and remove the chips. Be careful and control your CNC speed.

## Features

- ★ Carbide Drill Bit Size --- Drilling diameter: 3.1mm / 0.122"; tool flute length: 35mm / 1.38"; shank diameter: 3.1mm / 0.122"; overall length: 60mm / 2.36"; tool flute type: spiral; hardness: 91.5HRA; outer edge point angle: 120 degree
- ★ Wide Applications --- Widely used for precision drilling of alloy steel, stainless steel, tool steel, carbon steel, cast iron, copper, hard plastic. Use on machining centers, CNC lathes, drill presses and bench drills.
- ★ Spiral Flutes --- The spiral groove facilitates the export of metal chips, which saves time and effort in operation. Sharp flutes provide fast, neat and smooth cuts. Provides faster cutting speeds than other substrates and is harder but more brittle.
- ★ K35 Tungsten Carbide --- It is a micro grain tungsten-cobalt alloy with an average cobalt content of 10%. The solid carbide drill bits has high hardness (91.5HRA), wear resistance, corrosion resistance, high strength, bending resistance and high heat resistance.
- ★ Useful Tips --- Keep cool and gentle when using. Not recommended for use with a hand drill (easy to shake, poor stability). Proper use can greatly extend the working life of twist drill bits. If there is a problem with chip evacuation, go back in time and remove the chips.

## Images

![CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece - Image 1](https://m.media-amazon.com/images/I/51DW3POb1jL.jpg)
![CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece - Image 2](https://m.media-amazon.com/images/I/61s1quyR7ZL.jpg)
![CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece - Image 3](https://m.media-amazon.com/images/I/710n9QH8V0L.jpg)
![CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece - Image 4](https://m.media-amazon.com/images/I/712yJIaLWAL.jpg)
![CoCud Solid Carbide Drill Bits, 3.1mm Diameter, K35 Tungsten Carbide Straight Shank Twist Drill Bits - (Applications: for Stainless Steel Alloy), 1-Piece - Image 5](https://m.media-amazon.com/images/I/619Bt99bGGL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great drill, long lasting.
  

*by E***N on Reviewed in the United States on September 3, 2023*

This drill is fantastic. Durable and long lasting. Great price too.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Worked good
  

*by G***Y on Reviewed in the United States on August 9, 2023*

Used it for a pilot hole and it worked great.

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-06*