Description
Overview
The GRK Fasteners RSS Structural Screw (12137) is designed for structural fastening applications including carrying beams, ledger boards, stair rails, deck posts, playground equipment, and other professional interior or exterior installations.
| Specification | Detail |
|---|---|
| MPN | 12137 |
| Brand | GRK Fasteners |
| Size | No. 10 x 3-1/8 in. L |
| Material | Hardened Steel |
| Finish / Coating | Climacoat (Climatek) |
| Head Type | Washer Head |
| Drive Style | Star (T-25) |
| Thread Type | W-Cut |
| Self-Tapping | Yes |
| Self-Drilling | Yes |
| Package Quantity | 50 per pack |
| Package Weight | 1.19 lb |
| Indoor / Outdoor | Indoor and Outdoor |
| Driver Bit Included | Yes (T-25) |
| Packaging Type | Clamshell |
| UPC | 772691121370 |
Technical Features
- W-Cut Self-Tapping Thread Design: Specially engineered thread geometry cuts its own path during installation, reducing drive torque and eliminating the need for pre-drilling in most structural lumber applications.
- Zip-Tip Point: Sharp, hardened tip initiates penetration quickly and cleanly, improving installation speed and reducing wood splitting at entry.
- Patented Climatek (Climacoat) Coating: Factory-applied corrosion-resistant finish rated for both interior and exterior exposure, making these screws suitable for outdoor structural assemblies including decks and ledger boards.
- Washer Head Design: Integrated washer-style head distributes clamping load over a wider surface area, providing superior bearing strength against the fastened material compared to a standard flat head.
- Star Drive (T-25): Six-point star recess provides positive bit engagement, reducing cam-out during high-torque driving and improving installation control.
- Lag Screw Alternative: Classified by GRK as a structural lag screw alternative, allowing use in load-bearing connections where traditional lag screws would otherwise be required.
- T-25 Driver Bit Included: Each 50-pack clamshell includes a compatible T-25 driver bit, enabling immediate use without sourcing a separate accessory.
- Hardened Steel Construction: Specially hardened steel composition supports the structural shear and withdrawal loads associated with beams, posts, and rail connections.
Applications
- Carrying beams and structural lumber connections
- Ledger board attachment to house framing
- Deck post and deck frame assembly
- Stair rail and baluster fastening
- Playground equipment structural assembly
- General professional interior and exterior structural fastening
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