Vibration Resistance
The elastic spring force increases friction between fastening components, reducing the possibility of bolt or nut loosening under vibration conditions.
DIN 127A Spring Lock Washers with Tang Ends
- Standard: DIN 127A (Type A)
- Material: Stainless Steel
- Size: M2-M48
- Surface Treatment: Plain, Zinc Plated
- Min Order: 5000pcs
- Sample: Free sample (after quote)
- Delivery time: 30 – 45 Days
Product Overview
Product Application
DIN 127A is a German standard split spring washer with bent ends (Form A), widely used to improve fastening reliability in mechanical assemblies. By generating elastic preload between the bolt head or nut and the joint surface, DIN 127A washers help reduce loosening risks caused by vibration, impact, and repeated loading.
Manufactured from spring steel, carbon steel, or stainless steel, DIN 127A washers are commonly applied in automotive equipment, industrial machinery, electrical systems, construction hardware, and general engineering applications.
Draw
Specification
DIN 127A vs DIN 127B
DIN 127A
- Bent open ends
- More common in general applications
- Provides elastic locking through angled split design
DIN 127B
- Square-ended design
- Different contact characteristics
- Used for applications requiring alternative locking behavior
Product Advantages
Simple Installation
DIN 127A washers require no special tools or assembly procedures. They can be installed directly under bolt heads or nuts.
Cost-Effective Fastening Protection
Compared with more complex locking systems, DIN 127A provides an economical solution for improving fastening stability.
Common Questions
What is DIN 127A spring washer used for?
DIN 127A spring washers are used to improve the locking performance of threaded connections by creating elastic preload and increasing resistance against loosening caused by vibration.
Is DIN 127A still an active standard?
DIN 127A has been withdrawn without a direct replacement in some standard systems, but it remains widely used in engineering drawings and industrial applications due to its established dimensions and availability.
Does DIN 127A prevent all bolt loosening?
DIN 127A improves resistance against loosening but may not be suitable for extreme vibration applications. For high-load dynamic environments, wedge locking washers or mechanical locking solutions may provide higher reliability.
Can you provide OEM manufacturing?
Yes. We offer customized dimensions, hardness requirements, coatings, laser marking, packaging, and private-label solutions.
