Shop Metric Lockwashers Online at South Coast Fasteners

Types of Metric Lock Washers 

Metric Split Lock Washer Thru Hardened, DIN 127B, Plain

This washer uses a split-ring design that applies spring tension to the fastener, resisting loosening under vibration. The thru hardened construction adds strength, allowing it to endure repeated tightening and heavy torque. With its plain finish, it is best suited for controlled environments without moisture exposure. These washers are widely used in assembly work, maintenance shops, and mechanical applications.

Metric Split Lock Washer, DIN 127B, Zinc Yellow CR+6

Coated with zinc yellow CR+6, this washer combines the bite of the split design with added corrosion protection. The finish also gives it a bright gold color, making it easier to identify during assembly or inspections. Commonly used in electrical, automotive, and light construction, these washers are valued for their reliable grip and visibility. They deliver performance in environments where both protection and recognition are important.

Metric External Tooth Lockwasher, DIN 6797A, Zinc CR+3

Featuring outward-facing teeth, this washer locks tightly against the fastener and the work surface to prevent rotation. Its zinc CR+3 coating provides resistance against corrosion, making it a dependable option for everyday industrial use. These washers are popular in automotive, sheet metal, and electrical applications. Their tooth design ensures a firm grip even under vibration.

Metric External Tooth Serrated Lockwasher, DIN 6798A, Zinc CR+3

This washer adds serrated teeth for enhanced locking performance in high-vibration conditions. The zinc CR+3 finish protects the washer against rust and wear while maintaining a clean appearance. These are frequently used in electronics, appliances, and assembly projects requiring a secure fit. Their design delivers strong locking action with added durability.

Metric Internal Tooth Lockwasher, DIN 6797J, Zinc CR+3

Internal tooth washers grip the fastener head from the inside, making them ideal in tight spaces where external teeth are not practical. The zinc CR+3 finish provides corrosion resistance for general indoor and outdoor use. They are often chosen for electronics, machinery, and assemblies requiring compact but effective locking action. Their inward-facing teeth ensure fasteners remain tight under stress.

Metric Split Lock Washer Thru Hardened, DIN 127B, Zinc Blue CR+3

This washer combines thru hardened strength with a zinc blue CR+3 finish that provides additional corrosion resistance. It is designed for use in exposed or semi-exposed environments where moisture may be a factor. Construction, heavy machinery, and maintenance crews rely on these washers for secure fastenings. The combination of durability and protective coating ensures consistent performance.

Metric Hi Collar Lockwasher, DIN 7980, Plain

High collar lock washers provide greater spring tension thanks to their taller profile. The plain finish makes them suitable for indoor or controlled environments where rust protection is not required. These washers are commonly paired with socket head cap screws in machinery and precision equipment. Their design ensures a snug, long-lasting hold.

Metric Hi Collar Lockwasher, DIN 7980, Zinc CR+3

With the same high collar design, this washer includes a zinc CR+3 finish for added protection. It performs well in mechanical systems, assembly lines, and construction projects where corrosion resistance is necessary. These washers are valued for their ability to hold socket head screws securely under vibration. Their finish extends service life while maintaining strength.

Metric Curved Spring Washer, DIN 137A, Plain

Curved spring washers act as a flexible cushion, absorbing vibration and maintaining tension in assemblies. They are typically used in mechanical and electrical applications where movement or thermal expansion occurs. The plain finish makes them best suited for dry environments. Their design offers dependable spring action without adding bulk.

Metric Wave Spring Washer, DIN 137B, Plain

Wave spring washers feature a wavy shape that provides continuous spring force in a compact form. They are used in machinery, electronics, and bearing assemblies where controlled tension is required. The plain finish makes them cost-effective and reliable in non-corrosive settings. Their design prevents loosening while allowing flexibility in the joint.

Metric Lockwashers - Material Options

South Coast Fasteners stocks metric lock washers in the following material grade, ensuring performance under vibration and heavy loads.

Thru Hardened Medium Carbon Steel

Thru hardened medium carbon steel is the foundation for most metric lock washers, delivering strength and durability across demanding applications. The heat treatment process ensures consistent hardness throughout the washer, preventing cracking or deformation under torque. This material is widely trusted in automotive, construction, and industrial settings where safety and performance cannot be compromised.

Metric Lockwashers - Available Finishes

South Coast Fasteners offers metric lock washers in the following finishes to meet environmental and application-specific needs.

Plain

Plain lock washers are ideal for indoor or protected environments where corrosion is not a factor. They provide maximum strength from their hardened material while keeping costs economical. These are often used in controlled manufacturing, mechanical assembly, and equipment maintenance.

Zinc Yellow CR+6

The zinc yellow CR+6 finish adds corrosion resistance while offering a bright gold color for easy identification. It is commonly used in automotive, construction, and electrical industries. This finish provides reliable performance in semi-exposed environments where both protection and visibility are valuable.

Zinc CR+3

Zinc CR+3 delivers a silvery finish with strong resistance to rust and oxidation. It is a versatile option chosen for construction, electrical systems, and industrial equipment. The finish helps extend washer lifespan and maintain secure fastening performance in everyday conditions.

Zinc Blue CR+3

Zinc blue CR+3 combines corrosion resistance with a distinctive tinted finish, offering both protection and easy recognition. It is especially useful in outdoor or moisture-prone applications. Construction, heavy equipment, and maintenance operations often rely on this finish for added durability.

Why Choose South Coast Fasteners?

South Coast Fasteners ensures professionals have access to lock washers that meet strict quality standards and hold up under pressure. With reliable stock, expert guidance, and a variety of finishes and profiles, we help contractors, mechanics, and manufacturers find exactly what they need. Our focus on consistency and dependable supply makes South Coast Fasteners a trusted partner for critical fastening solutions.

Shop Metric Lock Washers Online at South Coast Fasteners

South Coast Fasteners keeps metric lock washers available in stock and ready for fast delivery. Whether you need split, tooth, or spring styles, ordering is quick and straightforward. Place your order online today and let our team provide the lock washers that keep your assemblies tight, secure, and built to last.