Security Torx Cap Screws/ Stainless Steel Security Screws/ Zinc Plated/ General Security/ Batch Orders Guanbiao Hardware
Premium A4-80 stainless steel Security Pin Torx cap screws. Ultimate corrosion resistance for marine, food processing & chemical plants. Tamper-proof TR drive. Passivated finish. View high-security specs.
Demanding corrosive environments require uncompromising security. Our **A4 Stainless Steel Security Pin Torx Cap Screws** deliver both. Manufactured from high-strength A4-80 (316) stainless steel and featuring the reliable **central pin-in-Torx drive**, these fasteners resist unauthorized removal while offering exceptional resistance to salt water, chemicals, and atmospheric corrosion. The robust cylindrical head design ensures high clamp force, making them essential for permanent or semi-permanent security in marine, offshore, food processing, pharmaceutical, and chemical industry applications.
TECHNICAL SPECIFICATIONS |
| Material | A4 / 316 Stainless Steel** (ISO 3506 Class 80 - **A4-80**) |
| Drive Type | Torx with Security Pin** (Tamper-Resistant Torx, TR, Pin-in-Torx) |
| Head Style | Cylindrical Head** (DIN 912 / ISO 4762) |
| Security Feature | Central Pin in Torx Recess |
| Strength | Min. Tensile Strength: **800 MPa** (Superior to standard A4-70) |
| Sizes (Diameter) | Common: M4, M5, M6, M8, M10, M12, M16. |
| Lengths | Standard & Custom |
Primary Uses & Applications:
* Marine hardware & boat deck fittings.
* Offshore platform equipment & enclosures.
* Food & beverage processing equipment access panels.
* Pharmaceutical cleanroom fixtures.
* Chemical plant instrumentation & tank access.
* Coastal infrastructure & bridge components.
* Water treatment facilities.
* High-value outdoor enclosures exposed to weather/salt.
Surface Treatment/Finishes:
* **Passivation (Standard):** Essential chemical process removing free iron particles and enhancing the natural chromium oxide layer for maximum corrosion resistance. Non-conductive finish.
* **Electropolishing (Optional):** Provides a smoother, brighter surface, further enhances corrosion resistance, improves cleanability, and reduces friction during installation. Ideal for hygienic environments.
How to Use:
1. **Prevent Galling:** **Crucially important!** Apply a **stainless steel specific anti-seize compound** (e.g., nickel-based) to the screw threads before installation. This drastically reduces the risk of galling (thread cold-welding/seizing), especially with stainless-on-stainless contact.
2. **Select Correct Driver:** Use the **matching TR driver bit** (e.g., TR40 for T40 TR screw).
3. **Installation:** Insert the TR bit firmly, engaging the pin. Drive the screw at **moderate speed** with consistent pressure. Tighten to the **recommended torque for A4-80 stainless steel**. Avoid excessive RPMs which generate heat and increase galling/seizing risk.
4. **Removal:** Use the correct TR bit. Apply steady torque. The anti-seize will facilitate removal. **Exercise caution** to avoid damaging the recess or rounding the pin.
5. **Reusability:** Can be reused if threads are undamaged and anti-seize is reapplied. Inspect carefully.
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Torx T Drive Style Tamper Proof A4-80 TR Cap Screws Chemical Resistance Images
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