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GRK FASTENERS 10225 10225 RSS 5/16" x 4" SCREWS 400CT
From the Manufacturer
GRK's RSS screw is made of specially hardened steel to provide you with tensile, torque and shear strength. The sharp threads and points bite instantly into material (including hardwood), reducing the splitting effect due to smaller shanks. The round head with built-in shield (washer type head) has no sharp edges like conventional lag screws. The GRK RSS screw is a great lag screw alternative.
Customer
Reviewed in Canada on January 11, 2025
I use them all the time for many different applications.The only complaint is they are getting expensive
kevin
Reviewed in the United States on July 20, 2022
Business/construction framimg
Phil Hugill
Reviewed in Canada on September 18, 2020
These things are so strong and save a lot of time.
Jesus Villalobos
Reviewed in the United States on December 28, 2020
Easy to use and very strong
Doug Padgett
Reviewed in the United States on January 5, 2020
Strong, much easier to use than lag bolts
David
Reviewed in the United States on September 23, 2019
Although more pricey than conventional fasteners, the results and ease of installation makes up for it.
Cockram
Reviewed in the United States on March 19, 2019
I'm building a 26'x26' deck. I like that It has a wide torx head instead of a screw head. They have great tensile strength.
Michael
Reviewed in the United States on December 31, 2018
Good faster for many applications. I used these to attach furring strips for a rain screen over rigid foam. These are better than the black headlok fasteners due to the coating, self tapping tip, and serrations on the under side of the pan head. The serrations allow the head to be counter sunk by simply tightening the fastener to the desired depth. Otherwise (e.g. Headlok) counter sink drilling with a forstner bit is required.
Matthew D. Weaver
Reviewed in the United States on December 5, 2014
I used several hundred attaching my own structurally insulated panels. Only 1 failue driving it into 2" oak. My only complaint: "Why can't we make them in the U.S.?"
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