0628611122258

GRK Fasteners

Model 112225

Internet #203525067

Store SKU #518167

5/16 in. x 4 in. Rugged Structural Screw (45-Piece per Pack)

$19.71 /each

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Product Overview

GRK's RSS screw is made out of Climate coated and hardened steel. Its sharp threads and point bite instantly into material (including hardwood), reducing the splitting effect caused by smaller shanks. Its washer type head has no sharp edges like conventional lag screws and the added shoulder underneath the washer has the ability to center the RSS screw in predrilled hardware.

  • Ideal for ledger boards and more
  • Self-tapping
  • W-cut thread design
  • May be used as a lag screw alternative
  • Washer heads for flush installation
  • Recommended drain: K-7272 or K-7271

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Customer Questions & Answers

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Customer Questions & Answers

5/16 in. x 4 in. Rugged Structural Screw (45-Piece per Pack)
5/16 in. x 4 in. Rugged Structural Screw (45-Piece per Pack)

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Can i use these screws in treated lumber?

This question is from 5/16 in. x 4 in. Rugged Structural Screw (45-Piece per Pack)
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May 27, 2016
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Asked by
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June 1, 2016
Answer: 
All GRK Fasteners (excluding the White Head Cabinet Screw) have had their Cimatek coating tested for approval in all types of treated lumber. This is part of our code approval process in which we get an AC257 testing approval along with our structural values. All fasteners coated in the Climatek coating are good for use in typical treated lumber.
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May 28, 2016
Answer: 
Yes, the screws can be used in treated lumber.
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Customer Reviews

Rated 5.0 out of 5 by 3 reviewers.
Rated 5.0 out of 5.0 by Serious Building Fastener Really tough screw that I would feel comfortable building nearly any wood structure with. They bit into the wood easily and the large flat head kept it from pulling into the wood. I closed in one bay of my barn by anchoring 2x8's into the vertical support beams. These screws worked flawlessly. I wasn't too keen on the star pattern in the end of the head because it requires you to have a special bit. Even though one is supplied with the box of screws, if that one got worn or lost I would not have another to finish the project with. I will say the star driver worked well and didn't slip at all. Also these screws are rather expensive, but the only other option I found was lag screws. I would recommend these if you can stand the price. December 3, 2014
Rated 5.0 out of 5.0 by Excellent structural screws Drills its own pilot, clearances the top board, doesn't cam-out or strip. Excellent for framing. Not just deck framing, but other tough joints where nails won't keep things together. July 28, 2014
Rated 5.0 out of 5.0 by these screws are tough Used these instead of lag screws when constructing outdoor propagation benches and an outdoor workbench. Quick and easy to run into pressure treated lumber. Designed to really snug up pieces. Store had these in 12-packs. September 5, 2013
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