I have to fasten 3 inch long bolts (5/16 head) into drywall/stud. Is this drill flute long enough to create a sufficient pilot holes?

Hmmm.... well, I would think if you anchored the shaft with the full 2 3/4 inch cutting screw exposed and sink it into the stud down to the chuck you might have a good pilot hole. The only thing that bothers me is that you said these are BOLTS not screws... so I don't know how much bite they will have to go that last 1/4 inch. so you may have to leave a bit of the shaft exposed to get the full 3" you will need. I hope that helps... hard to answer when I can't see what you are what you are working with. (I am a visual learner) ;) be safe and stay well.

Would it work with a craftsman drill?

Thank you for your question. The CO2135 Cobalt drill Bit has a rounded shank. If your Craftsman drill accepts round shank bit, then it will work. For further assistance, contact us at 1-877-BOSCH99 (1-877-267-2499) from M-F 7a-7p CST.

Bosch Co2135 1 8 In X 2 3 4 In | Desertcart Senegal

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

31766CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Description

⚙️ Drill Like a Pro, Last Like a Legend

UNMATCHED STABILITY - Rigid, thick web design ensures precision and durability in the most demanding applications.
VERSATILE METAL MASTER - Perfect for light-gauge metal, stainless steel, titanium, cast iron, and more—your go-to bit for diverse projects.
ENGINEERED FOR EFFICIENCY - Surface hardened to penetrate abrasive materials fast, combining speed with long-lasting sharpness.
HEAT RESISTANT POWERHOUSE - Drill through tough metals without overheating, sustaining performance up to 1100°F.
EFFORTLESS PRECISION START - Split point tip eliminates walking, so you hit the mark every time without a center punch.

The Bosch CO2135 1/8 in. x 2-3/4 in. Cobalt Drill Bit is engineered for high-performance drilling in hard metals. Featuring a heat-resistant cobalt build that withstands temperatures up to 1100°F, a thick web design for enhanced stability, and a split point tip for precise starts without walking, this drill bit excels in durability and efficiency. Ideal for professionals tackling stainless steel, titanium, cast iron, and more, it delivers fast material removal and long-lasting sharpness, making it a must-have in any serious toolkit.

Specifications

ASIN	B000AEVY24
Brand	BOSCH
Brand Name	BOSCH
Customer Reviews	4.7 out of 5 stars 1,955 Reviews
Cutting Angle String	118 Degrees
Cutting Diameter	0.13 Inches
Cutting angle string	118 Degrees
Cutting diameter	0.13 Inches
Finish Types	Titanium
Finish type	Titanium
Global Trade Identification Number	00000346333473
Included Components	1 Bit
Item Dimensions	4 x 46 x 147 millimeters
Item Type Name	Bosch CO2135 1/8 In. x 2-3/4 In. Cobalt Drill Bit
Item Weight	18 g
Manufacturer	Bosch
Material	Cobalt
Material Type	Cobalt
Model	CO2135
Number of Flutes	2
Number of Pieces	1
Part Number	CO2135
Point Style	Split Point
Set Name	Single
Shank Type	3-Flat
Shank type	3-Flat
Surface Recommendation	Metal
Tool Flute Type	Spiral
UPC	000346333473
Unit Count	1 Count

Reviews

P**A

Bosch CO2136 9/64 drill bit

The 5/64, 7/64 and 9/64 inch sizes are basic smaller drill bits. They are ones you are most likely to break in a bit set. So you will likely have to go shopping for replacements for broken bits in these sizes. I recommend the reasonably priced Dewalt DWA1205 and DWA1207 for the first two sizes and the Bosch CO2136 for the 9/64 inch. All are available from Amazon.

2.11.2025

M**E

Delivered on time.

Good quality worked as expected.

25.01.2025

B**A

Replaced a bit I broke in my set

Needed a cobalt bit to replace one I had broke in my set. Price was great.

18.03.2024

V**Y

good

works great on my super hard and 1/4 thick outdoor stainless steel handrail, but it still slips

6.06.2020

S**R

Very Good Drill Bit

I really like this bit. It did the job drilling into metal. Highly recommended.

14.03.2024

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews

31766CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago