5/16 in. x 4 in. Star Drive Round Head Rugged Structural Wood Screw (45-Piece per-Pack)
Includes 45 units (55¢ /unit)
$24.97
- Easy to install lag screw alternative
- Integrated washer head allows for maximum clamping force
- For interior / exterior use
- View More Details
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Questions & Answers
70Questions
Q:Why are they 3 1/8 inches instead of 3 inches? What is the point of the extra 1/8 inch?
by|Oct 23, 2023
1 Answer
Q:I have a modular, interlocking, 6 thick styrofoam roof panel clad in sheet aluminum. I want to add a typical roof gutter system but I am unsure of what fastener will hold in the styrofoam, will yours? Paul
by|Oct 14, 2023
1 Answer
Q:Can these be used to drill into Trex deck boards? Looking to anchor a gazebo on trex deck boards.
by|Jul 24, 2023
1 Answer
Q:Can you *really* drive this 3/8-wide lag screw through ten inches of wood without pre-drilling? Specifically, railroad ties.
by|Jul 17, 2023
1 Answer
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Jul 12, 2023
Used to use to anchor a floating ceiling medallion to the ceiling. They are “self tapping” so no pilot hole is needed once you mark your studs. Quality fastener for heavy duty needs.
by
Apr 27, 2023
Holy cow these babies know how to screw into the...
Holy cow these babies know how to screw into the 4x4‘s we used to build the hen house base. Self tapping and snugged it together perfectly. The t30 bit didn’t slip at all. Superior product to keep it together.
by
Jun 30, 2022
Easy and super strong
Worked great for holding together a 4x4 pressure treated frame
by
Oct 18, 2021
Do not use on exterior projects or PT wood
Completely corrodes into rust in a year. I built several projects with GRK and all screws are failing some are so bad the head breaks off. I am going to remove all of them and replace with stainless. Horrible product and waste of time and money.
by
May 8, 2021
STRONG
I used two to mount a BMW wheel on the wall of my garage. I pobably only needed one as i coud do chin ups on it! I tried to remove the coating with a wire wheel to get it silver but had to use a sanding wheel. Looks like it would hold up to the elements outside.
by
Jun 24, 2020
I used these fasteners to hold 4' x 8' sheets of 1/4" peg-board to the wall with nylon spacers be...
I used these fasteners to hold 4' x 8' sheets of 1/4" peg-board to the wall with nylon spacers behind. Now there are shovels, rakes, pitch-forks and the like hanging on the peg-board. These fasteners might be above and beyond, but I do not have to worry about the things coming off the wall.
by
Jun 10, 2020
Worked as designed. Used them to attach a mailbox to the post
Worked as designed. Used them to attach a mailbox to the post
by
Apr 22, 2020
Recommend by my building inspector and it has saved me money and time. Impact driver drills it in...
Recommend by my building inspector and it has saved me money and time. Impact driver drills it in in as little as 10 seconds.
by
Dec 24, 2019
Used for a lofted bed assembly and worked great. Easy to use and hold well.
Used for a lofted bed assembly and worked great. Easy to use and hold well.
by
Dec 24, 2019
I just had a new pole barn built, and the builders used these screws. It took a bit to find them...
I just had a new pole barn built, and the builders used these screws. It took a bit to find them, because they are not well advertised, but my wife found them at Home Depot. These screws are awesome. I had some customization on the new barn, so I bought two boxes of these, then 4 more for the farm. I liked the design and performance so well, I bought some #10's for smaller work. These screws drive easy and hold. If you wanted even better hold, get longer screws, but the ones I bought worked great through 2 inch wood. All in all, I can see me switching to these screws over lots of other kinds Phillips head screws.
by
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Compare Similar Items
Size | |||
|---|---|---|---|
5/16 in | 1/4 in | 1/4 in | 5/16 in |
Screw Length | |||
4 in | 3-1/8 in | 5 in | 6 in |
Fastener Plating | |||
Zinc | Zinc | Zinc | Zinc |
Drive Style | |||
Torx | Torx | Torx | Torx |
Package Quantity | |||
45 | 50 | 50 | 25 |
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GRK Fasteners' Rugged Structural Screw (RSS) is an easy to install lag alternative. Typical applications include structural decking, general framing, remodeling, structural applications, multi-ply and LVL fastening and ledger board. The unique thread design draws 2 substrates together while washer head allows zero gap joints.
GRK Fasteners RSS screw is made from 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.
GRK Fasteners RSS screw is made from 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.
GRK Fasteners RSS screw is made from Climatek 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.