The NRH 5616-380 and 5617-210 are premium heavy-duty adjustable toggle latches designed for extreme working conditions and large industrial equipment. Made of solid iron with blue zinc plating finish, they combine ultra-high structural strength and reliable anti-corrosion performance. The biggest highlight is the flexible adjustable range, adapting to installation demands of different panel thicknesses and assembly tolerances, perfectly suitable for customized industrial equipment and standard transport container locking scenarios.
NRH 5616-380 is an ultra-heavy-duty model with incredible 1200kg load capacity and 1147g net weight, featuring adjustable length from 380mm to 400mm. NRH 5617-210 is built for heavy industrial use, with 2940N (approximately 300kg) tensile load, 300g weight and 186.7mm to 217mm adjustable range. Both models deliver tight vibration-proof locking effect, eliminating gaps and preventing loosening during long-term high-vibration operation and transportation.
Product Spotlight: The Adjustable Heavy-Duty Solution
NRH 5616-380 and 5617-210 solve the locking difficulty of large and heavy equipment access doors. Built-in fine-tuning screw structure can precisely adjust the stretching distance, realizing tensioned close locking with no gaps left. It effectively resists vibration loosening, maintains the sealing integrity of protective enclosures, and ensures safety and stability during heavy cargo transportation and mechanical operation.
Technical Specifications & Core Features
Based on official engineering drawings and complete technical specifications:
- Unmatched Load Capacity: NRH 5616-380 supports ultra-heavy 1200kg for extreme load scenarios; NRH 5617-210 reaches 300kg tensile load, meeting most heavy industrial locking demands.
- Wide Adjustability: 5616-380 features 20mm adjustment range (380“400mm); 5617-210 covers over 30mm adjustable length (186.7“217mm), compatible with various panel thicknesses and assembly errors.
- Durable Material & Finish: Solid iron body with blue zinc plating, high structural hardness, good rust and corrosion resistance, adapting to harsh workshop dust and outdoor exposure environments.
- Precision Engineering for Secure Installation: Reinforced mounting structure with standard through-holes and counterbores such as Φ6.5mm & Φ11.5mm, providing super firm fastening and strong stress resistance.
Versatile Industrial Applications
With ultra-high load capacity and adjustable flexible design, these two heavy-duty latches are widely used in large industrial machinery, engineering equipment and logistics transportation fields:
- Industrial Machinery & Press Guards: Locking safety doors and protective panels for stamping presses, injection molding machines and large CNC equipment, ensuring fail-safe protection for operators.
- Mining & Construction Equipment: Fastening inspection hatches, engine covers and tool compartments on excavators, bulldozers and drilling rigs, resisting strong vibration and impact.
- Marine & Shipping Container Doors: Ideal for international shipping containers, freight crates and vessel hatches, adjustable design ensures tight sealing during long-distance transit.
- Heavy-Duty Transport & Logistics: Suitable for flatbed trailers, railway freight cars and special transport cages for machinery and automotive logistics.
- Agricultural & Forestry Machinery: Secure large access panels on harvesters, tractors and timber processing equipment, reliable for dusty outdoor job sites.
- Energy & Utility Sector: Perfect for protective enclosures of large generators, transformer housings and water treatment equipment panels.
Secure the foundations of industry and logistics. The NRH 5616-380 and 5617-210 adjustable toggle latches combine monumental load-bearing strength and flexible adjustable installation, delivering permanent, safe and reliable locking solutions for heavy machinery, engineering equipment and logistics transport containers.
For detailed CAD drawings, full specifications, or to discuss your specific heavy-duty application, please contact our engineering team.