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RS PRO Stainless Steel Plain Lock Washer M3 DIN 7980 189-686
Specifications
| Country of Origin | China |
|---|---|
| Brand | RS PRO |
| Material | Stainless Steel |
| Grade | A4 |
| THICKNESS | 1.0mm |
| Model | 189-686 |
| Finish | Plain |
| External diameter | 5.6mm |
| Inside Diameter | 3.2mm |
| Washer type | Lock |
| Standards/Approvals | DIN 7980 |
| Compatible Screw/Bolt Size | M3 |
| RS PRO Stainless Steel Washers, DIN 125ABrand | RS PRO |
Key Features
- Constructed from A4 grade stainless steel for exceptional corrosion resistance.
- M3 compatible size fits metric bolts and screws.
- Designed according to DIN 7980 standard for lock washer performance.
- External diameter of 5.6 mm and internal diameter of 3.2 mm.
- Plain finish and single coil for secure bolt and fastener retention.
- 1.0 mm thickness ensures durable performance in high vibration scenarios.
- Suitable for industrial machinery, appliances, and marine-grade environments.
- Supplied as a bag containing 100 pieces for convenient installation.
Product Description
RS PRO 189-686 Stainless Steel Plain Lock Washer M3, DIN 7980 is a high-quality spring lock washer engineered to prevent loosening of fasteners due to vibration and mechanical stresses. Manufactured from robust A4 grade stainless steel, it provides excellent resistance to corrosion and wear, making it suitable for demanding environments including marine, industrial machinery, and domestic appliances. The washer meets DIN 7980 standards, ensuring reliable locking performance.
This lock washer features a single coil construction and a plain finish. With an external diameter of 5.6 mm and an internal diameter of 3.2 mm, it fits standard M3 metric bolts, supporting secure fastening across various installations. The 1.0 mm thickness offers strength and maintains effective tension, preventing fastener migration even under high loads.
Applications include industrial machinery subject to vibration, automation systems, marine hardware, power transmission equipment, and household appliances such as washing machines. Its A4 stainless composition ensures long-term durability in harsh environments and provides resistance against chemicals and saltwater exposure.
The washer is packaged in bags of 100 units, offering ease of stocking and installation in manufacturing, maintenance, or assembly workshops. Its compliance with DIN 7980 guarantees interoperability and reliability where precise fastening is critical.
Key highlights include superior material quality, standardized dimensions and tolerances, and compatibility with M3 bolts used across a wide spectrum of equipment. Designed for professional use, RS PRO’s lock washers ensure safety, reliability, and ease of maintenance.
Browse more Lock Washers and fastening solutions from RS PRO in the Fasteners category at EnvMart for top-performing products in industrial, machinery, marine, and construction applications.
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Frequently Asked Questions
It is constructed from A4 grade stainless steel, providing exceptional corrosion resistance.
The external diameter is 5.6 mm, the internal diameter is 3.2 mm, and it has a thickness of 1.0 mm.
It is designed according to the DIN 7980 standard, ensuring reliable locking performance.
This model is compatible with M3 metric bolts and screws.
It features a plain finish, which is typical for this type of washer.
It is suitable for industrial machinery, appliances, and marine-grade environments due to its corrosion resistance.
It is supplied in a bag containing 100 pieces for convenient installation.
It is engineered to prevent loosening of fasteners due to vibration and mechanical stresses.
This product is classified as a lock washer, specifically designed for secure fastening.
The country of origin for this product is China.
It is suitable for applications in industrial machinery, automation systems, marine hardware, and household appliances.
The thickness of this model is 1.0 mm, providing strength and effective tension.
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