Customer Reviews for GRK Fasteners 5/16 in. x 5-1/8 in. Star Drive Low Head Washer Rugged Structural Wood Screw (40-Piece per Pack)

1st Class fasteners.....

Superior holding power. Good substitute for lag bolts. I found that drilling a 1/4 inch pilot hole through top board helped. You can use them without a pilot hole if you have a powerful driver. T25 head gives excellent drive power. withou

Great for my pressure treated lumber project. Because of diameter, I prefer to predrill holes for these bolts.

Comes with the right bit. Thanks for quality and convenience.

they work great just like advertised

Had never used these before in place of lag screws for fastening a ledger board. Are so easy without pre-drilling holes, etc

I was working on a project to buld a base for a plastic shed and it was just what I needed to secure the 2x8's together. I have had great luck with all GRK fasteners I have used, and will continue to be the only brand I buy.(I have yet to strip out a head on this brand)

Very expensive per unit for the largest pack, glad to be avle yo return them for less expensive screws that wirked for my application.

Rating provided by a verified purchaser

Rating provided by a verified purchaser

Rating provided by a verified purchaser

Perfect for a deck project!

Used to build a boat dock. Great for securing 2x8 joists to header boards before putting in brackets. Also used to hold 2x4 railing system on a gangway. Love the way these suck the boards together!

Great fasteners - comes with the Star Bit for install. Very Rugged!!

Great quality, Screws did not strip even when driver jumped out. Very pleased.

great product for building porches and decks

These screws are high quality and easy to use.