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GRK Fasteners No. 20 in. X 4 in. L Star Washer Head W-Cut Structural Screws
GRK Fasteners No. 20 in. X 4 in. L Star Washer Head W-Cut Structural Screws
GRK Fasteners No. 20 in. X 4 in. L Star Washer Head W-Cut Structural Screws
GRK Fasteners No. 20 in. X 4 in. L Star Washer Head W-Cut Structural Screws
GRK Fasteners No. 20 in. X 4 in. L Star Washer Head W-Cut Structural Screws

GRK Fasteners No. 20 in. X 4 in. L Star Washer Head W-Cut Structural Screws

Self-tapping W-Cut threads bite into wood fast, giving structural framing connections serious holding power indoors or out.
Grk Fasteners MPN 12225
Sold Locally Only

This product isn’t sold on our website — see your local hardware store.

In-Store Exclusive

This one's worth the trip to the store.

This Grk Fasteners item is one you'll find in stores rather than online — and that's often the better way to buy. In store you get the genuine article, full manufacturer warranty, and real advice from someone who's actually handled it — no counterfeits, no gray-market resellers.

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About Product Overview

GRK's RUGGED Structural Screw is built for load-bearing wood connections where a nail just won't cut it - ledger boards, beams, posts, and other framing work that needs real holding power. The W-Cut thread taps its own path into wood, so you skip pre-drilling and get a fast, clean install with the included star drive bit. Climacoat finish stands up to the elements, making these a solid pick for indoor or outdoor structural jobs.

  • Size: 5/16 in. x 4 in.
  • Material: Steel with Climacoat finish
  • Star drive, hex head, driver bit included
  • Self-tapping W-Cut thread, not self-drilling
  • 100 screws per clamshell package

The Details Specifications

Brand Grk Fasteners
Model / MPN 12225
UPC 772691122254
Weight 9 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
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