Overview
This double-thick lock washer is engineered to meet the rigorous DIN 25201 standard, providing a high-performance, vibration-resistant locking solution for M4 fasteners. It is designed for critical assemblies where joint integrity is paramount. Manufactured from durable 304 stainless steel with a plain finish, this washer offers excellent corrosion resistance for use in harsh or washdown environments. The dual-layer, self-locking design generates a powerful and consistent spring force to prevent fastener loosening caused by dynamic loads, thermal cycling, and shock. Supplied in a bulk pack of 1000 pieces, it is an efficient and reliable component for high-volume production, maintenance, and repair operations.
Key Features
Manufactured to DIN 25201 specification for assured dimensional consistency and performance. Double-thick design provides enhanced spring action and superior locking force compared to standard single-thickness washers. Constructed from corrosion-resistant 304 stainless steel for longevity in demanding environments. Plain, non-plated finish is suitable for applications requiring material purity and high-temperature resistance. Self-locking action maintains clamp load and prevents spontaneous loosening under vibration. Bulk packaging of 1000 units supports streamlined inventory management and production efficiency.
Specifications
System of Measurement: Metric Material Grade/Class: 304
Material
Stainless Steel Thread Size: M4 Finish: Plain Shaft/Bore Diameter: 0.157 in Thickness: Double Package Quantity: 1000
Applications
General industrial machinery and equipment assembly Automotive and transportation component manufacturing Electrical panel and enclosure construction Pump, valve, and fluid system piping connections Conveyor system maintenance and repair Food processing and packaging equipment where corrosion resistance is critical








