---
product_id: 22604419
title: "m42 Cobalt Drill Set"
brand: "drill america"
price: "38868 som"
currency: KGS
in_stock: null
reviews_count: 8
category: "Drill America"
url: https://www.desertcart.kg/products/22604419-m42-cobalt-drill-set
store_origin: KG
region: Kyrgyzstan
---

# 30% faster drilling speed 29 precision sizes 1/16"-1/2" Gold oxide wear-resistant finish m42 Cobalt Drill Set

**Brand:** drill america
**Price:** 38868 som
**Availability:** ❌ Out of Stock

## Summary

> ⚡ Drill like a pro, carry like a boss.

## Quick Answers

- **What is this?** m42 Cobalt Drill Set by drill america
- **How much does it cost?** 38868 som with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/22604419-m42-cobalt-drill-set)

## 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

- • **Built to Endure:** Gold oxide coating reduces wear and acts as a built-in lubricant for longer tool life.
- • **Carry Confidence:** Unique round drill index case fits in your hand, cup holder, or clipped to your belt—work anywhere, anytime.
- • **Versatile & Ready:** Round shanks fit most drill chucks; perfect for stainless steel, titanium, and Inconel.
- • **Speed Meets Strength:** Aerospace-grade cobalt steel enables drilling speeds up to 30% faster than standard bits.
- • **Precision in Every Drill:** 29 M42 cobalt bits in 1/64" increments for flawless fit and finish.

## Overview

The Drill America M42 Cobalt Drill Set features 29 precision bits ranging from 1/16" to 1/2" in 1/64" increments, crafted from aerospace-grade cobalt steel for 30% faster drilling speeds and exceptional durability. Its gold oxide finish provides wear resistance and lubrication, while the round shank design ensures compatibility with most drill chucks. Packaged in a sleek, portable round index case, this set is engineered for professionals tackling tough metals like stainless steel, titanium, and Inconel—delivering unmatched performance and convenience on the job.

## Description

Drill America D/A29J-CO-PC 29-Piece Cobalt Drill Bit Set contains 29 m42 Cobalt Drill Bits sizes 1/16" - 1/2" x 1/64" increments Sizes: 1/16", 5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 11/64", 3/16", 13/64", 7/32", 15/64", 1/4", 17/64", 9/32", 19/64", 5/16", 21/64", 11/32", 23/64", 3/8", 25/64", 13/32", 27/64", 7/16", 29/64", 15/32", 31/64" and 1/2". Drill America M42 Cobalt Drills are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium. They are manufactured to Aerospace Standard 907 and display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel. Cobalt drills have a self-centering 135-degree split point penetrates hard material without a pilot hole and produces smaller chips that reduce clogging compared to a 118-degree point. Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures. A gold oxide finish acts as a lubricant and provides wear resistance, and the round shank accommodates most drill chucks. This Drill Set comes in a unique round drill index that combines form and function into 1 beautifully designed, easy to carry drill set. The shatter proof, water resistant case fits easily, anywhere you need it. Effortlessly grip the set in 1 hand as you would a travel coffee mug, leave it in the cup holder of your truck while on the way to your job or hang it on your belt when all hands are on deck.

Review: Quality - Absolutely put these through the ringer on aluminum steel hardened steel stainless steal quality quality quality
Review: Excellent Set. Always throw nice chips or wire (depending on substrate). - Many people don't realize, but drill bits are meant to operate at different speeds, depending upon the material being drilled. I use these primarily in my drill press and adjust the belts as required for the correct RPM. I use cutting oil on metal. These always get the job done except... Recently, I had been using my portable hammer drill with hammer bits, and left it in hammer position. When I picked up the drill to drill a set screw out of a brake rotor, I picked up and mounted the 5/32". It is the correct diameter for one of the easy outs. Set the tip, pulled the trigger, and rat-a-tat-a-tat. I released the trigger. The drill was still set where I had left it. The tip edge was chipped and ruined. I used the next smaller (9/64) to finish the hole, on standard drill mode, and the fine cut wires from the drilling immediately started to pour from the sides of the bit. I contacted Drill America to inquire about the warranty, which they stated did not exist. I even went as far as to say it was of no fault of their manufacturing, but my bone-headed maneuver. The rep said, even though they had no warranty against such stupid activity (my words, not theirs) that they would be happy to send me a replacement. It arrived a few days later at no cost. If you use these at the proper speed with the proper equipment, and proper lubrication, they will last for a long time. This is true of all bits, but, especially expensive ones.

## Features

- Set contains 29 m42 Cobalt Drill Bits sizes 1/16" - 1/2" x 1/64" increments
- Cobalt Drills are effective in drilling tough, high tensile strength materials like stainless steel, Inconel, and titanium
- Gold oxide finish acts as a lubricant and provides wear resistance
- Round shanks allow use with a wide variety of tool holding systems
- Manufactured to Aerospace Standard 907 and display high red hardness, permitting speeds up to 30% greater than with conventional M2 high speed steel
- Cobalt steel provides extended tool life compared to high-speed steel drill bits, and maintains the tool's toughness and hardness in high drilling temperatures
- Effortlessly grip the set in 1 hand as you would a travel coffee mug or leave it in the cup holder of your truck while on the way to a job
- When all hands are on deck, hang the drill index on your belt whether you're in the shop or field
- Unique round drill index combines form and function into 1 beautifully designed, easy to carry drill set

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00B0326OE |
| Best Sellers Rank | #116,144 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #286 in Jobber Drill Bits |
| Brand | Drill America |
| Cutting Angle String | 135 Degrees |
| Cutting Diameter | 0.5 Inches |
| Date First Available | January 11, 2013 |
| Finish Type | Gold |
| Global Trade Identification Number | 00887861038508 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.2 pounds |
| Item dimensions L x W x H | 4 x 2 x 6 inches |
| Item model number | D/A29J-CO-PC |
| Manufacturer | Drill America |
| Material | Cobalt |
| Number of Flutes | 2 |
| Number of Pieces | 29 |
| Point Style | Split Point |
| Product Dimensions | 4 x 2 x 6 inches |
| Set Name | D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set |
| Shank Type | Round |
| Surface Recommendation | Plastic |
| Tool Flute Type | Spiral |
| UPC | 887861038508 |
| Unit Count | 29.0 Count |

## Product Details

- **Cutting Angle String:** 135 Degrees
- **Cutting Diameter:** 0.5 Inches
- **Finish Type:** Gold
- **Material:** Cobalt
- **Shank Type:** Round

## Images

![m42 Cobalt Drill Set - Image 1](https://m.media-amazon.com/images/I/71h35RN39fL.jpg)
![m42 Cobalt Drill Set - Image 2](https://m.media-amazon.com/images/I/81cUtre7lyL.jpg)
![m42 Cobalt Drill Set - Image 3](https://m.media-amazon.com/images/I/71zDfss0BbL.jpg)
![m42 Cobalt Drill Set - Image 4](https://m.media-amazon.com/images/I/71UAZODOBsL.jpg)
![m42 Cobalt Drill Set - Image 5](https://m.media-amazon.com/images/I/71XBMud6q9L.jpg)

## Available Options

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

## Questions & Answers

**Q: Why do these bits have different markings on them, hss, hsco, and co?**
A: Hello, HSSCO and CO are both cobalt drils. There should not be any HSS only drills in there. If there is any drills marked only HSS please contact us on our website at www.DrillAmerica.net with your order information we will get it straightened out for you. Thank you.

**Q: what is the difference between the 35 and 42? i dont see a difference in the specs**
A: The 42 has a higher cobalt content than the 35.

**Q: Are thesse bits good for dripping in t7075 aluminum?**
A: Hello,  Yes, you can use these cobalt drill bits on this aluminum material.

**Q: how do i replace broken bits?  I have the M42 set and need to replace 1/8 and 7/64 bits**
A: these bits come only in this set. i bought many different single bits on amazon.  put in 1/8 drill bit on amazon or any size and you will find many choices.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Quality
*by L***N on January 27, 2026*

Absolutely put these through the ringer on aluminum steel hardened steel stainless steal quality quality quality

### ⭐⭐⭐⭐⭐ Excellent Set. Always throw nice chips or wire (depending on substrate).
*by T***T on April 27, 2021*

Many people don't realize, but drill bits are meant to operate at different speeds, depending upon the material being drilled. I use these primarily in my drill press and adjust the belts as required for the correct RPM. I use cutting oil on metal. These always get the job done except... Recently, I had been using my portable hammer drill with hammer bits, and left it in hammer position. When I picked up the drill to drill a set screw out of a brake rotor, I picked up and mounted the 5/32". It is the correct diameter for one of the easy outs. Set the tip, pulled the trigger, and rat-a-tat-a-tat. I released the trigger. The drill was still set where I had left it. The tip edge was chipped and ruined. I used the next smaller (9/64) to finish the hole, on standard drill mode, and the fine cut wires from the drilling immediately started to pour from the sides of the bit. I contacted Drill America to inquire about the warranty, which they stated did not exist. I even went as far as to say it was of no fault of their manufacturing, but my bone-headed maneuver. The rep said, even though they had no warranty against such stupid activity (my words, not theirs) that they would be happy to send me a replacement. It arrived a few days later at no cost. If you use these at the proper speed with the proper equipment, and proper lubrication, they will last for a long time. This is true of all bits, but, especially expensive ones.

### ⭐⭐⭐⭐⭐ Very well built. Works well with a Rapidrill attachment!
*by N***W on May 9, 2024*

So I got these, they seemed a bit expensive but I had high hopes. They did not disappoint! I drilled 20 holes in a 1/2 inch piece of steel and there seems to be not much wear...besides a small chip on the tip (user error). They work much better with drill oil, a pilot hole and a mobile drill press, shout out Rapidrill!

## Frequently Bought Together

- Drill America - D/A29J-CO-PC 29 Piece M42 Cobalt Drill Bit Set in Round Case (1/16" - 1/2" X 64ths), D/ACO Series
- Tap Magic 30004P ProTap Cutting Fluid, 4 oz. Size
- Forney 20857 Tap Magic Industrial Pro Cutting Fluid, 4 oz - Pack of 2

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-02-24*