Manufacturer | GRK |
---|---|
Place of Business | Glenview, IL 60025, US |
Part Number | 772691122759 |
Item model number | 772691122759 |
Is discontinued by manufacturer | No |
Size | 3/8" x 4" |
Colour | Gold |
Finish | Climatek Coated |
Material | Steel |
Shape | Helical With Round Head |
Item Package Quantity | 1 |
Number of Pieces | 50 |
Head Style | Round |
Cutting Diameter | 0.38 Inches |
Measurement System | Imperial |
Special Features | Paintable |
Warranty Description | Guaranteed against manufacturer defects |
Assembled Diameter | 0.38 Inches |
Item Weight | 1.18 kg |
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GRK RSS384HP RSS HandyPak 3/8 by 4-Inch Structural Screws, 50 Screws per Package Yellow
Purchase options and add-ons
Material | Steel |
Drive system | Torx |
Head style | Round |
Item dimensions L x W x H | 33.3 x 9.1 x 8.4 Centimetres |
Exterior finish | Climatek |
About this item
- Built in washer head
- Self-Tapping W-cut thread design
- Zip-Tip
- Patented Climatek coating
- Lag Screw Alternative
Frequently bought together

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Product description
鶹.ca Product Description
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From the Manufacturer
GRK RSS Rugged Structural Screw has a patented design and made of specially hardened steel to provide customers with high 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 GRK RSS series screws that are 3-1/8-Inch and longer have six CEE threads which enlarge the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increases the screw's drawing strength. The CEE thread also reduces the friction on the screw shank which can lower the driving torque and reduce splitting. The round head with built-in washer type head shield does not have any sharp edges like conventional lag screws. The added shoulder underneath the washer has the ability to center the RSS screw in pre-drilled hardware like hinges and connector plates. The RSS screws can be used as a lag screw alternative. Some sizes available is PHEINOX Stainless Steel.
Product information
Technical Details
Additional Information
ASIN | B001SFUAJW |
---|---|
Customer Reviews |
4.2 out of 5 stars |
鶹 Rank |
|
Date First Available | May 5 2013 |
Feedback
From the manufacturer


Star Drive, Washer Head
- Washer head allows zero gap joints
- Climatek coated; provide corrosion resistance in pressure treated wood with corrosive ground contact

Zip-Tip Point
- Zip-tip allows for faster penetration
- Easy-to-install lag alternative

W-Cut
- Provides low installation torque which allows for fast driving and ease of install

Unique Thread
- Unique thread design draws two substrates together
- ESR-2442 approved for structural applications
RSS RUGGED STRUCTURAL APPLICATIONS
Ledger boards
Interior and exterior framing
Multi-ply
Heavy duty framing

LVL Fastening

Structural Decking
Top Brand: GRK
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Price | $81.99$81.99 | $50.34$50.34 | $24.99$24.99 | $73.94$73.94 | -10%$44.77$44.77 Was: $49.74 | -5%$53.00$53.00 Was: $55.99 |
Delivery | Get it by Saturday, Jul 26 | Get it Jul 29 - Aug 6 | Get it by Saturday, Jul 26 | Get it by Saturday, Jul 26 | Get it Jul 28 - 31 | Get it by Saturday, Jul 26 |
Customer ratings | ||||||
Sold by | ITW Construction Products Canada | Layger | FMhotu | 鶹.ca | Ophiuchus Star | Collings Timbermart |
material | Steel | Carbon Steel | Alloy Steel | Steel | Steel | Steel |
head style | Round | Flanged | Serrated | Round | Round | Cap Head |
head type | Washer | Flat | Pan | Round | Round | Truss |
thread type | UNC | UN | UNC | Proprietary (ASTER thread) | Proprietary ASTER thread | — |
thread size | 3/8 inches | — | 5/16 inch | 3/8 inches | 3/8" | 5 3/4 |
thread style | wood thread | Right Hand | Right Hand | Right Hand | wood thread partially threaded | — |
drive system | Torx | Torx | Star Drive | Torx | Torx | Torx |
fastener type | Self-Tapping Screw | Wood Screws | Wood Screws, Self-Drilling Screws, Deck Screws | Wood Screws | Wood Screws | Wood Screws |
fastener size | 3/8" | 35,6 cm x 7,6 cm | 2-7/8 Inch | 8 inches | 3/8 in x 7-1/4 in | 0.152 x 6-Inch |
point style | Self-Drill Point | Type A Point | Type A Point | Type 17 Point | Type 17 Point | Type 17 Point |
exterior finish | Climatek | Black Oxide | — | Gold Galvanized | Gold Galvanized | Painted |
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Customer reviews
Top reviews from Canada
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- Reviewed in Canada on March 24, 2019Verified PurchaseWell made, ready for use.
- Reviewed in Canada on May 14, 2022Verified PurchaseWhen we build objects that need strength incorporated into them we often use these screws instead of bolts.
- Reviewed in Canada on August 8, 2016Verified PurchaseBetter than a standard lag screw. Drives considerably more easily, with less chance of over-torqueing and breaking. Received promptly.
Top reviews from other countries
- James LandeReviewed in the United States on February 6, 2022
5.0 out of 5 stars No problem
Verified PurchaseI used four bolts to hold a sculpture onto a base. Drilled 1/4 inch pilot holes into the end grain of dogwood. If you are not familiar with working that wood, it is harder and tougher than hickory. So I was worried that the threads wouldn't be able to cut their way into the wood. Had to go in part way, then unscrew to clear chips. But they are in and should hold even if the sculpture gets knocked over. I could have never done this with standard lag bolts or rather, I would have needed pilot holes that were nearly the size of the bolts.
James LandeNo problem
Reviewed in the United States on February 6, 2022
Images in this review
- JakeReviewed in the United States on July 26, 2019
5.0 out of 5 stars Quality Product. Easy Install
Verified PurchaseI used these to hang a ledger on a 54’x16’ deck. I researched many connection options. These are awesome because the washer like heads have cutters on the back to countersink the heads. This allowed me to set joists directly over these lag screws and line my deck joists up with my house floor joists. They drive easily as well.
- Matthew MillsReviewed in the United States on September 15, 2018
5.0 out of 5 stars Everyone should use them
Verified PurchaseThese are the best screws to use when you need a lag screw. I use a bigger washer for even more holding power and I like that they don’t need to be predrilled. These do great for almost every application.