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Prime-Line 9056408 Hex Lag Screws, 3/8 In. X 4 In., A307 Grade A Hot Dip Galvanized Steel (25 Pack)

Free shipping on orders over $29.99

$19.41

$ 8 .99 $8.99

In Stock

1.Size:3/8 In. -16


About this item

  • Size: 3/8 inch X 4 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
  • Thread Type: Deep, Point Style: Gimlet
  • Specification(s) Met: ASME B18.2.1 and ASTM A307A


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.


Anthony B.
Reviewed in the United States on June 29, 2024
Yep. They are screws that did what they are designed to do.
Rob
Reviewed in the United States on July 12, 2022
Lag bolt delivered as expected.
houston
Reviewed in the United States on March 4, 2022
Well made
EE
Reviewed in the United States on April 2, 2022
These bolts cannot take a lot of torque: sheared (see picture) when tightened with a short wrench into Douglas fir with a 5/16" pilot hole (a decent bolt would have stripped the wood long before shearing).Unfortunately, it is likely that other more expensive bolts are coming from the same factory in China and will not fare any better.Adequate for light duty applications.
Richard Lyman
Reviewed in the United States on September 11, 2021
only wish i had more (ordered) ;)
Mark L.
Reviewed in the United States on June 13, 2020
I was skeptical buying these without any reviews at the time, but they seem to be a good product, I used them in pressure treated wood, I was expecting to brake 1 or 2, but didn't. The only issue I ran into was the head size was slightly different on some of them and you have to work a little to get the socket on, but for the price I'm willing to work a little.
jg
Reviewed in the United States on March 26, 2019
Great value
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