Dongguan Guanbiao Hardware Products Co., LTD
Dongguan Guanbiao Hardware Products Co., LTD Innovation is the foundation, quality is the life, pragmatism is the purpose, and efficiency is the goal. Customer satisfaction is our ultimate goal.
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Premium A2-70 stainless steel hex socket furniture screws. No rust, ideal for outdoor, bathroom & kitchen furniture. Self-tapping tip, flush countersunk head. Passivated finish. M5-M8 sizes. Durable connections.
Build furniture to last, even in damp or outdoor environments, with our premium **A2 Stainless Steel Hex Socket Countersunk Self-Tapping Furniture Connecting Screws**. Crafted from corrosion-resistant A2-70 (304) stainless steel, these screws resist rust, tarnishing, and moisture damage, making them perfect for outdoor furniture, kitchens, bathrooms, marine interiors, and high-humidity areas. Featuring the same efficient **self-tapping point** and **flush-mounting countersunk head** as our standard screws, they combine ease of assembly with exceptional durability and a sleek appearance. The **hex socket drive** ensures reliable installation without stripping.
TECHNICAL SPECIFICATIONS | |
| Material | Carbon Steel (Grade 4.8 or 8.8 equivalent) |
| Drive Type | Hex Socket (Internal Hex / Allen Key) - Common sizes: H4, H5, H6 (M5, M6, M8). |
| Head Style | Countersunk Head (82° / 90° included angle) |
| Point Type | Sharp Self-Tapping Point (Optimized for hardwoods & composites) |
| Surface Finish | Passivated (Standard), Electroplated Nickel optional. |
| Features | Partial thread for clamping, high tensile strength (700 MPa min) |
| Thread Type | Coarse thread pitch for wood composites |
Primary Uses & Applications:
* High-end indoor furniture (kitchens, bathrooms, luxury cabinets).
* Outdoor & garden furniture (tables, chairs, benches, pergolas).
* Marine cabinetry & boat interior furniture.
* Bathroom vanities & fixtures.
* Furniture for humid climates or spas/saunas.
* Connecting hardware to exotic hardwoods or dense composites.
* Applications requiring a non-corroding, aesthetically clean fastener.
Surface Treatment/Finishes:
* **Passivation (Standard):** Essential chemical process that removes free iron particles and enhances the natural chromium oxide layer, maximizing corrosion resistance. Leaves a clean, slightly matte stainless finish.
* **Electroplated Nickel (Optional):** Provides a bright, silvery finish for enhanced aesthetics and *slightly* improved corrosion resistance. Can reduce galling tendency.
How to Use:
1. **Prevent Galling (Crucial):** Apply a small amount of **stainless steel specific anti-seize lubricant** or **wax** to the screw threads before installation. This drastically reduces the risk of galling (cold welding/seizing), especially in hardwoods or dense composites.
2. **Align Parts:** Position panels precisely.
3. **Insert & Drive:** Place screw tip on the surface. Insert the **correct size hex key**. Drive the screw at a **90° angle** using **steady, moderate speed and force**. The self-tapping point will cut threads.
4. **Tighten Flush:** Drive until the countersunk head is **fully seated flush** with the material surface. **Avoid excessive RPMs** which generate heat and increase galling risk.
5. **Pilot Holes:** Highly recommended for **hardwoods, near edges/ends, or thick/dense materials**. Drill a pilot hole slightly smaller than the screw's core diameter (approx. 60-70% of shank diameter). This prevents splitting and makes driving easier, reducing galling risk.
6. **Tool Quality:** Use high-quality, sharp hex keys or bits that fit snugly to avoid damaging the socket.