Name: IRWIN 5/16-in x 18-in Woodboring Installer bit Drill Bit
Brand: IRWIN
SKU: 1003071120
Price: 13.64 USD
Availability: InStock
Rating: 4.7 (115 reviews)

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IRWIN® Straight Shank Wood Installer Bits feature an 82-degree point for fast, smooth drilling in wood. These bits are made with a hole in the flute for easy wire pulling through walls, ceilings and floors. They have a 3-flatted shank to prevent slipping in drill chucks and the shank also includes a hole for wire pulling. Plus, they are made from premium high carbon steel for extended drilling life in wood.

Hole in flute for easy wire pulling through walls, ceilings, and floors
3-flatted shank prevents slipping in drill chuck and includes hole for wire pulling
82° point for fast, smooth drilling into wood
Premium high carbon steel construction for extended drilling life in wood

General
Sub-Brand	N/A	Case Type	N/A (no case)
Material	Alloy steel	Shank Type	3-flat
Package Quantity	1

Dimensions
Bit Diameter (Inches)	5/16-in	Bit Length	18-in

Features
Quick Change	No	Set/Individual	Individual

Compatibility
Brand/Model Compatibility	All	For Use on Wood	Yes
For Use on Metal	No	For Use With	Power tool

Warranty
Warranty	None

Certifications
CA Residents: Prop 65 Warning(s)	Prop 65 WARNING(S) -

Miscellaneous
UNSPSC	27112800

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

Review

4.7 out of 5

115 Reviews

97% Recommend this product

Ratings may include incentivized customer reviews.

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What Customers Are Saying

The drill bit is durable and performs well for various woodworking tasks, quickly and efficiently drilling through different types of wood. Users praise its sharpness, long length, and sturdy triangular design that prevents slipping. The bit is versatile, allowing successful use for installing cables, wires, and other home projects.

Customer review summary generated by AI, including incentivized reviews.

115 Customer Reviews

Sort By

It's a good tool and worth the cost.

Would Recommend

My first experience with this tool. I was reinforcing a 4"x4" beam with 2"x6" weather treated lumber. I had to drill 4 holes through all three to insert 10" bolts. The tool enabled me to easily accomplish the objective.

LonnieJune 19, 2026
From 3_SLASH_8-in x 18-in Woodboring Installer bit Drill Bit Verified Purchaser

Was this Review Helpful ?

Long drillbit

Would Recommend

Very strong and durable drillbit, it did perfect for the job I bought it for

KevinDLodgeJune 15, 2026
From 3_SLASH_8-in x 18-in Woodboring Installer bit Drill Bit Verified Purchaser

Was this Review Helpful ?

drill bit

Would Recommend

Works for very deep holes

Bad painterJune 7, 2026
From 1_SLASH_4-in x 18-in Woodboring Installer bit Drill Bit Verified Purchaser

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Its a drill bit does what its supposed to

Would Not Recommend

Drills

AidenJune 7, 2026
From 1_SLASH_4-in x 18-in Woodboring Installer bit Drill Bit Verified Purchaser

Was this Review Helpful ?

Good Quality

Would Recommend

This is a great product that we will continue to use moving forward.

CPeakeMay 13, 2026
From 1_SLASH_4-in x 18-in Woodboring Installer bit Drill Bit Verified Purchaser

Was this Review Helpful ?

Great drill bit that got the job done.

Would Recommend

Drilled thru a 14 inch header like butter.

Life Long TechnicianMay 6, 2026
From 3_SLASH_8-in x 18-in Woodboring Installer bit Drill Bit Verified Purchaser

Was this Review Helpful ?

Worked well

Would Recommend

Quality product

SplatApril 1, 2026
From 3_SLASH_8-in x 18-in Woodboring Installer bit Drill Bit Verified Purchaser

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8 Questions

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COMPARE PRODUCTS

		Name	Current Item IRWIN5/16-in x 18-in Woodboring Installer bit Drill Bit
		Ratings	115
		Bit Diameter (Inches)	5/16-in
		Material	Alloy steel
		Bit Length	18-in
IRWIN1-in x 16-in Woodboring Spade bit Drill Bit	IRWIN1/2-in x 18-in Woodboring Installer bit Drill Bit	IRWINMax 5/8-in x 16-in Woodboring Installer Drill Bit	IRWIN3/4-in x 7-1/2-in Woodboring Ship auger bit Drill Bit	IRWINSPEEDBOR MAX 1/2-in x 16-in Woodboring Installer Drill Bit	IRWINMarples 1-1/2-in x 3-11/16-in Woodboring Forstner bit Drill Bit	IRWINMarples 1-3/8-in x 3-11/16-in Woodboring Forstner bit Drill Bit	IRWINSPEEDBOR MAX 3/4-in x 16-in Woodboring Installer Drill Bit	IRWINMarples 3/4-in x 3-11/16-in Woodboring Forstner bit Drill Bit
243	70	51	40	60	205	205	72	97
1-in	1/2-in	5/8-in	3/4-in	1/2-in	1-1/2-in	1-3/8-in	3/4-in	3/4-in
High-carbon steel	Alloy steel	Alloy steel	High-speed steel	High-carbon steel	High-carbon steel	High-carbon steel	High-carbon steel	High-carbon steel
16-in	18-in	16-in	7-1/2-in	16-in	3-11/16-in	3-11/16-in	16-in	3-11/16-in