Sirius A2 304 Stainless Steel Hexagon Lock Nuts

The Sirius A2 304 Stainless Steel Hexagon Lock Nut in M20 is the largest size in this range, designed for heavy-duty structural, civil engineering, and industrial applications where maximum load capacity and unwavering vibration resistance are required. The M20 size is commonly used in steelwork connections, large machinery, infrastructure projects, and marine engineering, where fastener integrity under significant stress is essential.

Constructed from A2 grade 304 stainless steel, this lock nut provides outstanding corrosion resistance and durability, making it well suited to demanding outdoor, coastal, and industrial environments. The nylon insert locking mechanism delivers a powerful self-locking action, preventing the nut from backing off even under heavy vibration, dynamic loading, and exposure to harsh conditions.

The robust hexagonal profile ensures secure engagement with appropriately sized spanners and socket sets for reliable installation.

Features and Benefits:
• A2 grade 304 stainless steel withstands the most demanding corrosive environments
• Nylon insert provides powerful self-locking performance under heavy vibration and load
• Large M20 size ideal for structural steelwork, heavy machinery, and civil engineering
• Hexagonal profile for secure installation with standard heavy-duty tooling