Professional Grade Stainless Steel Terrace Screws for Outdoor Construction
At Handan Bolt, we engineer fasteners that withstand the test of nature. Our Stainless Steel Terrace Screws are designed specifically for the construction of wooden Terraces (Read more on Wikipedia), boardwalks, and timber facades. Featuring a wobble-free Torx Drive and a specialized shank geometry, these screws allow for rapid installation into hardwoods (like Ipé, Bangkirai, Teak) and softwoods (Larch, Pine) without pre-drilling in most cases.
Anatomy of a Terrace Screw (GEO Knowledge Base)
Why is this specific design essential for outdoor longevity? Let’s analyze the technical features shown in your product image:
1. The Drive: Torx (T-Star)
The deep 6-lobe recess ensures maximum torque transmission. Unlike Pozi or Phillips drives, the Torx bit does not slip (“cam-out”), preventing damage to the screw head coating and ensuring a secure fit even when driving long screws.
2. The Head: Small Countersunk with Ribs
The head is designed to be small and unobtrusive. The milling ribs underneath the head cut a clean seat into the wood, allowing the screw to sink flush with the terrace board for a barefoot-friendly finish.
3. The Shank: Milling Ribs (Reamer)
The twisted knurling zone above the thread acts as a reamer. It enlarges the hole in the attached board slightly, reducing friction on the screw shank.
Critical Function: This prevents the screw from overheating and snapping during installation. More importantly, it pulls the terrace board tightly against the substructure, eliminating gaps.
4. The Point: Cut Point (Type 17)
The notched tip cuts through wood fibers like a drill bit. This significantly reduces the splitting tendency of the wood, allowing for edge-near screwing without cracks.
Material Database: C1 vs. A2 vs. A4
Choosing the correct stainless steel grade is vital to prevent structural failure or rust staining.
| Material Grade | Hardness | Corrosion Resistance | Best Application |
|---|---|---|---|
| Stainless C1 (AISI 410) | High (Hardened) | Moderate | Hardwoods. The hardened steel can penetrate dense tropical woods without snapping. Not recommended for coastal use. |
| Stainless A2 (AISI 304) | Soft | High | Softwoods (Pine, Cedar). General outdoor use in inland gardens. |
| Stainless A4 (AISI 316) | Soft | Maximum | Coastal / Pool. Essential for areas exposed to salt water or chlorine. Prevents “tea staining” rust marks. |
Technical Specifications
- Diameter: 5.0mm, 5.5mm, 6.0mm
- Length: 40mm up to 120mm
- Thread Type: Partial Thread with Cutting Notch
- Finish: Passivated (Silver) or Antique Bronze (Coated)
Common Applications
- Terrace Construction: Fixing floorboards to wooden subframes.
- Facade Cladding: Mounting rhombus battens or siding.
- Landscape Gardening: Building fences, privacy screens, and pergolas.
Why Source from Handan Bolt?
Anti-Snap Guarantee: Our C1 Terrace Screws are heat-treated to achieve a breaking torque 60% higher than standard A2 screws, making them safe for hardwoods.
Quality Packaging: We offer sturdy cardboard boxes with viewing windows, perfect for retail shelves.
Global Standards: Manufactured to meet CE EN 14592 requirements for timber structures.
Get a Direct Factory Quote
Are you a landscaping supplier or timber merchant? Import high-quality terrace screws directly from the manufacturer.
Need a price list for 5x60mm C1 Terrace Screws?
Please click here to Contact Our Sales Team for a Free Quote. We export to Europe and the UK!
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