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5/16-in x 3-1/2-in Bronze Ceramic Round -Head Exterior Lag screws

Ratings & Reviews for Power Pro 5/16-in x 3-1/2-in Bronze Ceramic Round -Head Exterior Lag screws

4.6
115
Review
 4.6 out of 5
115 Reviews


88% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these lag screws for exceptional holding strength and reliable performance in demanding wood projects. Reviewers consistently highlight superior grip in heavy-duty applications like securing 4x4s and mounting heavy items, with the large head design eliminating washer needs. The Torx drive system prevents stripping and cam-out, making installation smooth with an impact driver. Most note that pre-drilling pilot holes in hardwood ensures success, and proper tools are essential. A few experienced minor issues, but the vast majority consider these screws highly dependable and worth the investment.

Customer review summary generated by AI, including incentivized reviews.
115 Customer Reviews

Worked well!

Would Recommend

Worked well.

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Pilot hole needed.

Would Recommend

This round head lag screw has a large diameter head which is good for clamping but causes a problem. My driver extension has a non-rotating sleeve for guiding the screw and driver extension. The sleeve would not go over the large diameter head on this screw. This caused a lot of wobble and the screw was difficult to start into the wood. I would definitely drill a pilot hole the next time I use this screw. I just did the install so cannot comment on the corrosion resistance yet.

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Response from Customer Service@Hillman

Hello, We’re sorry to hear that this product was unsatisfactory and did not meet or perform to your expectations. We will continue to monitor product...

Customer Service@HillmanJuly 8, 2025

The color worked well for my project

Would Recommend

used for an art project

January 4, 2025
From 5_SLASH_16-in x 3-in Bronze Ceramic Round -Head Exterior Lag screws Verified Purchaser
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NEEDED TO TIGHTEN UP A LOOSE SCREEN DOOR FRAME

October 16, 2024
From 5_SLASH_16-in x 5-in Bronze Ceramic Round -Head Exterior Lag screws Verified Purchaser
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5/16 x 6" Bronze Torx Lag Bolt

Would Recommend

Love the button head and torx drive

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Good self taper

Would Recommend

The only thing I had a problem with was finding a star driver large enough.

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Great wood screws

Would Recommend

Quality,ease of screwing and the grab 👍

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Always find an answer

When I visit Lowe’s looking for a possible solution to a problem, rarely am I disappointed. The selection choice is excellent.

December 26, 2023
From 5_SLASH_16-in x 3-in Bronze Ceramic Round -Head Exterior Lag screws Verified Purchaser
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Good screws, wish I could get them in 1.25" length

Would Recommend

no pre-drilling, torx drive & large head

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It is strong

Would Recommend

It was strong and did the job I needed

October 15, 2023
From 5_SLASH_16-in x 6-in Bronze Ceramic Round -Head Exterior Lag screws Verified Purchaser
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They work

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Good product.

Would Recommend

Works great. Just make sure you have a long enough drill bit to pre-drill the hole.

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