Product Overview: Stainless Steel Hex Bolt
The Stainless Steel Hex Bolt (SSHB Series Heavy Fasteners) is an essential mechanical connection fitting widely utilized across power transmission towers, electrical substations, cable management systems, and grounding grid networks. Manufactured by YiHao Power, our stainless steel fasteners are produced from premium grade A2-70 (304) and A4-70 (316) austenitic alloys. Engineered to satisfy international quality and performance standards for electrical utility hardware, each Stainless Steel Hex Bolt provides maximum clamping reliability, excellent electrical conductivity across joints, and uncompromised structural integrity in harsh industrial environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Series | SSHB Series Stainless Steel Hex Bolts & Fasteners |
| Material Grade | Austenitic Stainless Steel Grade A2-70 (304) / A4-70 (316) |
| Surface Finish | Bright Passivated / Natural Clean Finish |
| Thread Configuration | Full Thread / Partial Thread (M6 to M36 Metric Sizes Available) |
| Standard Compliance | UL / BS / IEC / ISO Standards Compliant |
| Application Scope | Substation Structures, Cable Tray Splices, Ground Clamps, Coastal Power Hardware |
Key Performance Features of Our Stainless Steel Hex Bolt
- Superior Atmospheric Corrosion Resistance: Chromium-rich oxide film naturally protects every Stainless Steel Hex Bolt from surface pitting, rust stains, and chemical erosion in humid or coastal salt-air environments.
- Anti-Galling Precision Threading: Advanced thread rolling techniques minimize friction during torque installation, preventing thread seizing and cold welding when paired with matching stainless nuts.
- High Mechanical Load Rating: Engineered for minimum tensile strengths up to 700 MPa, keeping heavy electrical hardware, transformer terminals, and structural steel joints tightly clamped against vibration.
- Non-Magnetic Electrical Property: Ideal for high-voltage switchgear, busbar clamps, and induction equipment where magnetic interference must be strictly avoided.
Installation Guidelines for Fastener Assemblies
Proper installation of a Stainless Steel Hex Bolt ensures optimal clamping force and long-term joint integrity. Follow these standard field practices:
- Surface Cleanliness: Remove grit, metal shavings, and oil from the mounting hole and thread contact area prior to bolt insertion.
- Use of Anti-Seize Compound: Apply a light film of stainless steel anti-seize lubricant onto bolt threads to ensure consistent torque readings and allow easy disassembly during future maintenance.
- Calibrated Torquing: Tighten the hex nut using a calibrated manual torque wrench to the required engineering torque setting, avoiding over-tightening.
Primary Application Scenarios Across Power Facilities
Our premium stainless steel fasteners are widely deployed across global infrastructure projects, including:
- Cable tray coupler plates, ladder rack joints, and conduit mounting brackets.
- High-voltage substation switchgear, circuit breaker terminals, and transformer busbars.
- Equipotential grounding busbars, terminal lug bolting, and earth clamp connections.
- Offshore wind turbine platforms, coastal solar PV mounting structures, and marine power plants.
Frequently Asked Questions (FAQ)
Q1: What is the main difference between A2-70 and A4-70 Stainless Steel Hex Bolts?
A1: A2-70 (Grade 304) is ideal for standard indoor and general outdoor electrical hardware. A4-70 (Grade 316) contains molybdenum, offering superior resistance against marine salt spray and industrial chemicals.
Q2: Why should anti-seize lubricant be used when installing stainless steel bolts?
A2: Stainless steel alloys can experience thread galling (cold welding) under high friction. Applying anti-seize lubricant ensures smooth thread engagement and prevents thread seizing.
Quality Assurance & Factory Testing
Every batch of Stainless Steel Hex Bolt products manufactured by YiHao Power undergoes rigorous quality control inspection before dispatch. Our testing protocols include thread pitch gauge checks, tensile proof load testing, chemical alloy composition spectro-analysis, and salt spray corrosion testing.
