GRK's RSST rugged structural screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. RSST screws which are 3-1/8 in and longer have a six threaded CEE thread that enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily and increasing the screw's drawing strength. The CEE thread also reduces the friction on the screw shank which can result in lowering the driving torque and the likelihood of splitting the wood. This is why the RSST screw is an efficient lag screw alternative. Our round head with built-in shield (washer type head) has no sharp edges like conventional lag screws. The added shoulder (nominal diameter) underneath the washer has the ability to center the RSST screw in pre-drilled hardware like hinges and connector plates.
Product Details
Manufacturer: ITW BUILDEX AND ILLINOIS TOOL WORKS
Manufacturer's Part Number: 11137
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Product Features
- Washer head for immense holding power
- W-CUT™ for low torque, faster drive
- CEE THREAD™ enlarges hole to reduce splitting
- ZIP-TIP™ ensures no pre-drilling and faster penetration
- Case hardened steel for high tensile, torque and shear strength
- Recessed star drive for zero stripping, with six points of contact
- Climatek™ coating is AC257 code approved for use in treated lumber
- Cutting pockets provide a clean hole, reduces splitting and bore with precision
Product Specifications
| Applicable Materials | Treated Lumber |
| Drive Size | T25 |
| Drive Type | Recessed Star |
| Head Type | Washer |
| Includes | 2 in Bit |
| Length | 3-1/8 in |
| Material | Steel |
| Package Quantity | 236 PK |
| Point Type | Zip-Tip |
| Thread Type | W-Cut |
| Type | Rugged |
Product Documents
| Catalog | Click here to download |
| Specification Sheet | Click here to download |