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Prime-Line 9056655 Hex Lag Screws, 3/8 In. X 8 In., A307 Grade A Hot Dip Galvanized Steel (10 Pack)

4.5 (8) Write Review
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$22.99

$ 10 .99 $10.99

In Stock

About this item

  • Size: 3/8 inch X 8 inch
  • Heavy duty wood screw with 6 sided hex bolt head
  • Features deep wood screw threads and does not accept a nut
  • Used in applications where standard wood screws cannot support the load (deck building, etc.)
  • Requires pilot hole to be drilled and installs using wrench or socket tool


Lag screw bolts are used in place of standard wood screws whenever the mounting surface must bear a heavy load. The hex head allows for lag screws to be tightened with more torque than can be used on Phillips head screws, though a pilot hole is still required prior to installation. Note that lag screws do not accept nuts as they are technically thick heavy duty wood screws with threads designed to cut into wood. They are ideal for use on decks since installation can be accomplished without having access to both ends of the fastener, as opposed to standard hex bolts that require a nut on the opposite end.


Steve Hochschild
Reviewed in the United States on January 15, 2025
Used with a drill to stake down a shade structure on the Black Rock desert
eric kleiner
Reviewed in the United States on September 9, 2024
Exactly what I needed. Home Depot did not have this length
Steve and Laura Andrews
Reviewed in the United States on June 5, 2024
Works fine to hold my garden bed ties together. Screwed in place with an impact without issue.
Terry
Reviewed in the United States on September 7, 2023
Used to secure heavy wood beams. Tightened using ratchet and bolts held up.
Darren
Reviewed in the United States on May 16, 2023
When the holes are predrilled, this works great, otherwise it will twist off.
Daniel
Reviewed in the United States on September 22, 2021
Screws worked great and we much less expensive than from the local hardware store. Used to on a large exterior project.
AlmostEverything84
Reviewed in the United States on September 13, 2020
I bought these just to use on my dock. Secured a handrail and also a bunch of line holders. I will say.. my 5v drill could not get these in even with a nice pilot hole. I had to hand crack with a socket the remaining 1-2 inches... so my tip is to have a higher power drill! Other than that they should never rip out and should not really rust either.
howard belz
Reviewed in the United States on October 23, 2020
the product has a thin spot just where the threads begin it breaks there when trying to make the final tightening adjustments easily