🔩 Screw it right, screw it fast — the pro’s choice for lasting strength!
GRK FASTENERS 12225 RSS 5/16" x 4" screws are premium stainless steel, self-tapping fasteners designed for structural wood-to-wood applications. Featuring a Fast Bite Tip for quick starts, a corrosion-resistant Climatek finish for exterior durability, and a Torx drive system with a bugle head for superior grip and installation ease. Sold in a convenient 100-count pack, these screws are code-approved and built to last.
| Material | Steel |
| Drive System | Torx |
| Head Style | Hex |
| Exterior Finish | Climatek |
| Thread Size | 5/16inches |
| Point Style | Fast Bite |
| Metal Type | Stainless Steel |
| Brand | GRK |
| Color | Gold |
| Head Type | Bugle |
| Item Weight | 3.95 Pounds |
| Thread Type | Coarse, Right Hand |
| Thread Coverage | Partially Threaded |
| Fastener Type | Self-Tapping Screw |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Thread Style | Right Hand |
| Thread Class | Aggressive |
| Fastener Size | 5/16" x 4" |
| Size | 5/16" x 4" |
| Item Diameter | 0.31 Inches |
| Compatible groove diameter | 0.31 Inches |
| Number of Pieces | 100 |
| UPC | 772691122254 |
| Global Trade Identification Number | 00772691122254 |
| Manufacturer | GRK |
| Part Number | 772691122254 |
| Item Weight | 3.95 pounds |
| Country of Origin | USA |
| Item model number | ICC-ESR-2442 |
| Is Discontinued By Manufacturer | No |
| Power Source | Air Powered |
| Item Package Quantity | 1 |
| Cutting Diameter | 0.31 Inches |
| Measurement System | Imperial |
| Special Features | Paintable |
| Included Components | Screws |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Guaranteed against manufacturer defects |
S**A
Most Impressive Screw I've ever used
At first glance this is the best engineered and manufactured screw I've ever bought. I used these to tie 2x8s into the perimeter of my patio roof and homes exterior walls as the frame work to screen in my patio. These worked beautifully, I did drill 1/8" pilot holes since I was sinking these near the edges of the boards and wanted to be 100% sure I didn't split the wood. When these screws grabbed a stud in the wall they pulled the 2x8 really tight (like a clamping force) from the little cutting threads on the screw. I will definitely be using this again for all my future projects that require a lag screw.
J**R
Great screws
Great screws, I'm not a professional, but these things really tighten down. Using them on treated wood to make a deck on my house.
K**N
Order was short 15 screws
Screws worked awesome. Only problem was there were only 85 screws, 15 short. Can I please get 15 screws sent to me?
M**L
Good but....
Torx bit that comes with it is cheaply made
A**R
Get a grip!
How refreshing to have a screw that you tighten properly using a torx bit.Head of GRK screw is a nice halfway point in size between a more bulky bolt head and a more miniscule Phillips head which may require a washer.
P**H
This screw is a beautiful piece of engineering
This screw is a beautiful piece of engineering. It is ideal for wood-to-wood connections or even steel-to-wood connections in all kinds of interior/exterior applications. When I can afford these, there is no better lag.
G**R
Five Stars
The best screws for projects that need to last outdoors. They are self drilling and go in like butter
I**D
Missing the drill bit
Box was missing the drill bit! Very disappointing and inconvenient as I now have to make an extra trip to the hardware store, when I was counting on starting into the job as soon as the screws arrived.
Trustpilot
2 days ago
1 week ago
