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5/16-in x 4-in Bronze Epoxy Round -Head Exterior Lag screws

Ratings & Reviews for Power Pro 5/16-in x 4-in Bronze Epoxy Round -Head Exterior Lag screws

4.7
138
Review
 4.7 out of 5
138 Reviews


95% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise these structural screws for exceptional strength and reliable holding power in demanding applications like deck repairs and heavy-duty mounting. Most highlight the self-tapping design that eliminates pre-drilling, noting they drive smoothly with standard tools and grip firmly in wood and metal. Reviewers appreciate the durable construction, tight bit engagement, and bronze finish. A few mention the included bit may strip under high torque and suggest upgrading sizes. Despite minor concerns about long-term outdoor corrosion, most customers consider these screws a top-tier fastener choice.

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

Works as should

Worked perfect for mounting 50 pound teller unit in a pharmacy

June 21, 2026
From 5_SLASH_16-in x 3-in Bronze Epoxy Round -Head Exterior Lag screws Verified Purchaser
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extra lenght

Would Recommend

Long enough for our project.

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Awesome screw

Would Recommend

Great bolt. I used it to anchor some brackets into my garage ceiling.

June 15, 2026
Verified Purchaser
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Make sure your driver has enough torque

Would Recommend

I used a handful of these in a deck repair project and they worked well for what I needed. It's too early to know how they will hold up over time outdoors. I am a little concerned about corrosion long term, but these felt really solid.

June 13, 2026
From 5_SLASH_16-in x 6-in Bronze Epoxy Round -Head Exterior Lag screws Verified Purchaser
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Make sure your driver has enough torque

Would Recommend

I used a handful of these in a deck repair project and they worked well for what I needed. It's too early to know how they will hold up over time outdoors. They felt very tough, but I am a little concerned about corrosion.

June 13, 2026
From 5_SLASH_16-in x 8-in Bronze Epoxy Round -Head Exterior Lag screws Verified Purchaser
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good hold

Would Recommend

easy to work with

June 12, 2026
Verified Purchaser
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Easy to use

Would Recommend

Works as intended. Easily screws in with no pilot hole needed.

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Worked perfectly

Would Recommend

Beautiful screw

June 10, 2026
From 5_SLASH_16-in x 5-in Bronze Epoxy Round -Head Exterior Lag screws Verified Purchaser
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Worked flawlessly

Would Recommend

Used to attach ground spikes to a playground

June 10, 2026
From 5_SLASH_16-in x 3-in Bronze Epoxy Round -Head Exterior Lag screws Verified Purchaser
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5/16 x 5" wood screws

Would Recommend

great product, drills and locks in the wood joints etc.. great

June 10, 2026
From 5_SLASH_16-in x 6-in Bronze Epoxy Round -Head Exterior Lag screws Verified Purchaser
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Good bite into the wood and dependable.

Would Recommend

Goes in quickly, have never broken one, and the heads always hold to the torx bit

June 9, 2026
From 5_SLASH_16-in x 5-in Bronze Epoxy Round -Head Exterior Lag screws Verified Purchaser
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Bountiful...

Would Recommend

Durability and plenty in stock whereas I have gone to other places and the stock is limited.

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Middy

Would Not Recommend

Mid

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Tough Product

Would Recommend

Strong and reliable screw. Used to secure in a fireplace I had framed in and had held up nicely

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