302H Threaded Inserts
- 302H threaded inserts丨Marine grade inserts丨A4-80 stainless fasteners丨Vibration-proof inserts丨Heavy-duty thread repair
302H Threaded Inserts: Corrosion-Resistant Heavy-Duty Fastening for Automotive to Marine Applications
The 302H threaded insert delivers military-grade reliability across extreme-service industries. Engineered with A4-80 stainless steel construction and deep-rolled locking threads, it achieves 50,000+ hour salt fog resistance (ASTM B117) while providing 40% higher shear strength than ISO 3506 Class 80 standards. From EV battery enclosures to offshore drilling rigs, its patented design eliminates galvanic corrosion and vibration-induced loosening.
Critical Performance Advantages
► INDUSTRY-SPECIFIED ENGINEERING:
1. Triple-Seal Threadform丨Dual polymer grooves + mechanical lock丨**IP69K submersible rating**
2. Cold-Forged A4-80 SS丨0.2% yield strength @ 450MPa丨**Chloride immunity**
3. Anti-Vibration Flanks丨Asymmetric 75° pressure angle丨**Zero micro-movement**
4. Blind Hole Optimization丨Chip-breaking pilot tip丨**15-second installations**
Cross-Industry Application Matrix
Sector Mission-Critical Uses Certifications
Automotive EV battery trays丨Chassis reinforcements 丨 IATF 16949丨SAE J2339
Rail Transit Bogie frame bolts丨Coupler assemblies 丨 EN 15048-6丨BS EN 13749
Marine Deck cleats丨Ballast tank covers 丨 DNV GL-CG-0038丨ASTM F1091
Appliances Washer drums丨Refrigerator compressors 丨 UL 62368丨IEC 60335-1
Construction Excavator booms丨Crane pivot joints 丨 ISO 16047丨DIN 946
Electronics 5G tower bases丨Robotic servo mounts 丨 MIL-STD-461G丨IP67 rated
Installation Protocol
☆ Drilling:
Hard alloys: Ø = Insert Ø + 0.03mm (e.g., 8.03mm for M8)
Soft materials: Ø = Insert Ø - 0.08mm (interference fit)
☆ Driving:
Impact wrench @ 200-400 RPM (3-5 N·m torque)
☆ Locking:
Final ½ turn activates triple-seal mechanism
Technical Validation:
25kN ultimate tensile strength (M10 size), survives 100G shock per MIL-STD-810H.