Release time：2020-01-16 18:44 Browse：
Here’s a detailed point-by-point description with technical specs, applications, and supply details:
### 1. **Product Overview**
- **Material**: 304 stainless steel (A2 grade, 18Cr-8Ni), offering high corrosion resistance and durability.
- **Types**:
- **Outer Hexagon Screws**: Threaded throughout (full-thread) for clamping in thin materials.
- **Exterior Hexagon Bolts**: Partial-threaded (half-thread) with unthreaded shank for shear strength in load-bearing joints.
- **Finish**: Natural stainless steel finish (passivated) for inherent rust resistance; optional PVD black coating available.
### 2. **Technical Specifications**
- **Size Range**:
- **Metric**: M4 to M36 (diameter), 10–300mm (length).
- **Inch**: 1/4" to 1-1/2", 0.5" to 12" (custom lengths on request).
- **Thread Standards**:
- Metric: ISO 68-1 (coarse) / ISO 13670 (fine) with 6g tolerance.
- Inch: UNC/UNF (ASME B1.1) with 2A tolerance.
- **Head Dimensions**: Conforms to ISO 4014 (hex width across flats: e.g., M12 = 19mm, 1/2" = 13/16").
### 3. **Key Features**
- **Corrosion Resistance**:
- Withstands mild acids, alkalis, and salt spray (500+ hours in ASTM B117 tests), suitable for outdoor/marine environments.
- **Design Utility**:
- **Hexagonal Head**: 6-point design for wrench/socket engagement (reduces slippage compared to Phillips heads).
- **Chamfered Edges**: Eases alignment during installation; radius under head minimizes stress concentration.
- **Stock Availability**:
- Standard sizes (M6–M24) in 10,000+ piece quantities; ready for same-day shipment.
### 4. **Applications**
- **Marine & Coastal**:
- Boat hull fittings, dock structures, and offshore equipment (resists saltwater corrosion).
- **Construction & Architecture**:
- Stainless steel railings, curtain walls, and outdoor signage (aesthetic and durable).
- **Industrial Equipment**:
- Food processing machinery (FDA-compliant 304), chemical tanks, and pharmaceutical equipment.
- **Electronics & Appliances**:
- Heat-resistant components (up to 800°C) in ovens, exhaust systems, and HVAC units.
### 5. **Supply & Logistics**
- **Inventory Status**:
-实时库存查询 (Real-time stock check) via online portal; updated hourly.
- Bulk storage in climate-controlled warehouses to prevent surface oxidation.
- **Lead Times**:
- Standard orders (≤5,000 pieces): Shipped within 24–48 hours (DHL/UPS/FedEx).
- Custom orders (non-standard lengths/coatings): 7–14 days production time.
- **Packaging**:
- Poly bags with rust-inhibiting paper for small orders; palletized cartons (50kg/unit) for bulk shipments.
### 6. **Quality Assurance**
- **Testing**:
- **Tensile Strength**: Confirmed ≥520 MPa (annealed 304) via universal testing machines.
- **Passivation Verification**: Conducted per ASTM A967 to ensure chloride-free surfaces.
- **Thread Gauging**: 100% inspected with Go/No-Go tools for compliance.
- **Certifications**:
- RoHS/REACH compliant; CE marked for structural use (EN 1090 when applicable).
- Material test reports (MTRs) provided on request.
### 7. **Customization Options**
- **Non-Standard Features**:
- **Thread-Locking**: Pre-applied Loctite 242 or nylon inserts for vibration-prone applications.
- **Special Coatings**: PTFE (Teflon) for low-friction assemblies or heat-resistant coatings (up to 1,200°C).
- **Markings**: Laser-engraved part numbers, batch codes, or logos for traceability.
- **OEM Services**:
- Custom packaging (branded boxes/bags) for distributors; kitting services for multi-component orders.
### 8. **Advantages Over Alternatives**
- **Cost-Effective Corrosion Resistance**: Lower cost than 316 stainless steel for non-critical saltwater applications.
- **Design Flexibility**: Full/half-thread options and extended lengths reduce need for custom machining.
- **Magnetic Properties**: 304 (non-magnetic in annealed state; slightly magnetic after cold working) suits sensitive environments.
### 9. **Environmental & Safety Compliance**
- **Sustainability**:
- Recyclable 304 steel reduces carbon footprint; minimal packaging waste (95% recyclable materials).
- **Safety Data Sheet (SDS)**:
- Available for all coatings and treatments, compliant with GHS regulations.
### 10. **Customer Support**
- **Technical Assistance**:
- Free design consultations for load-bearing calculations and material selection.
- 24/7 customer service for order tracking and issue resolution.
- **Return Policy**:
- 30-day money-back guarantee for unused, undamaged products.
