Name: Kobalt 3/16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit
Brand: Kobalt
SKU: 50093132
Price: 14.28 USD
Availability: InStock
Rating: 4.1 (388 reviews)

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Shipping Details

General
Material	High-speed steel	Type	Countersink
Package Quantity	1	Shank Type	Hex

Dimensions
Maximum Drilling Depth	2-5/8-in	Bit Diameter (mm)	4.75mm
Bit Diameter (Inches)	3/16-in	Shank Size	1/4-in
Bit Diameter (Number)	#10	Bit Length	Standard

Features
Heavy Duty	Yes	Set/Individual	Individual
Right/Left Hand	Left handed/Right handed	Tip Geometry	Pilot point

Compatibility
For Use on Fiberglass	Yes	For Use on Stainless Steel	No
For Use on Metal	No	Brand/Model Compatibility	Kobalt
For Use on Wood	Yes	Compatible Tool	Drills/Impact drivers
For Use on PVC	Yes

Warranty
Warranty	None

Certifications
CA Residents: Prop 65 Warning(s)	No

Miscellaneous
UNSPSC	20121600

Check out the Best Selling Twist Drill Bits on Lowes.com

Review

4.1 out of 5

388 Reviews

75% Recommend this product

Ratings may include incentivized customer reviews.

Read All Reviews

+ 9

What Customers Are Saying

The adjustable countersink drill bit is generally well-received, with users praising its convenience and effectiveness in producing clean, even holes. Key features include the adjustable collar for controlling depth and the combination of drilling and countersinking in a single step. However, some users have reported concerns about the bit's durability and longevity, with issues like premature breakage or dulling, as well as difficulty finding replacement bits.

Customer review summary generated by AI, including incentivized reviews.

388 Customer Reviews

Sort By

Would Recommend

Its fine. Works well, but a bit overpriced. Can find similar suitable bits online. Not fancy brands, but they will do the trick.

Noname4uAugust 14, 2026
From 9_SLASH_64-in 3.55mm #6 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser

Was this Review Helpful ?

Good quality bit.

Would Recommend

Good bit. Works well. Stays sharp.

Ken CJune 22, 2026
From 9_SLASH_64-in 3.55mm #6 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser

Was this Review Helpful ?

Good

Would Recommend

Works like it should

NoclueJune 22, 2026
From 11_SLASH_64-in 4.35mm #8 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser

Was this Review Helpful ?

Just a bit

Would Recommend

Makes a nice clean counter sink hole.

Rob LowesJune 3, 2026
From 9_SLASH_64-in 3.55mm #6 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser

Was this Review Helpful ?

11 Questions

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How do you adjust it?

Anyone know the diameter of the shell head for this item?

Hex doesn't hold well in my DeWalt driver chuck. When I'm finished drilling and go to pull back out, the hex pops out of the chuck. Anyone else?

What size hole does the countersink make

Where do i get replacement bits

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COMPARE PRODUCTS

		Name	Current Item Kobalt3/16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit
		Ratings	388
		Bit Diameter (Inches)	3/16-in
		Material	High-speed steel
		For Use on Metal
Kobalt3 -Piece Assorted High-speed steel Countersink Twist Drill Bit Set	Kobalt7/64-in #8 1-5/8-in High-speed steel Countersink Twist Drill Bit	DEWALTBLACK GOLD 5 -Piece Assorted High-speed steel Countersink Twist Drill Bit Set	SpyderStinger 7/16-in 4-1/2-in High-speed steel Jobber length Twist Drill Bit	SpyderStinger 1/2-in 5-in High-speed steel Jobber length Twist Drill Bit	Southwire9/16-in Standard High-speed steel Silver Deming Twist Drill Bit	SpyderStinger 3/8-Inch 3/8-in 4-1/4-in High-speed steel Jobber length Twist Drill Bit	Kobalt1/2-in 6-in Titanium coated HSS Jobber length Twist Drill Bit	Eagle Tool US3/8-in 5-in High-speed steel Flex high speed bit Twist Drill Bit
244	190	80	1	53	20	45	402
Assorted	7/64-in	Assorted	7/16-in	1/2-in	9/16-in	3/8-in	1/2-in	3/8-in
High-speed steel	High-speed steel	High-speed steel	High-speed steel	High-speed steel	High-speed steel	High-speed steel	Titanium coated HSS	High-speed steel