Hot Products
0102030405
China DIN 127 Galvanized and Blackened Spring Washers - Quality Suppliers and Factory Solutions
Dimensional Specifications — Nominal Diameter M2 to M14
| Nominal diameter | 2 | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | 12 | -14 | |
| d | Min | 2.1 | 2.6 | 3.1 | 4.1 | 5.1 | 6.2 | 8.2 | 10.2 | 12.3 | 14.3 |
| Max | 2.3 | 2.8 | 3.3 | 4.4 | 5.4 | 6.7 | 8.7 | 10.7 | 12.8 | 14.9 | |
| h | Public | 0.6 | 0.8 | 1 | 1.2 | 1.6 | 2 | 2.5 | 3 | 3.5 | 4 |
| Min | 0.52 | 0.7 | 0.9 | 1.1 | 1.5 | 1.9 | 2.35 | 2.85 | 3.3 | 3.8 | |
| Max | 0.68 | 0.9 | 1.1 | 1.3 | 1.7 | 2.1 | 2.65 | 3.15 | 3.7 | 4.2 | |
| n | Min | 0.52 | 0.7 | 0.9 | 1.1 | 1.5 | 1.9 | 2.35 | 2.85 | 3.3 | 3.8 |
| Max | 0.68 | 0.9 | 1.1 | 1.3 | 1.7 | 2.1 | 2.65 | 3.15 | 3.7 | 4.2 | |
| H | Min | 1.2 | 1.6 | 2 | 2.4 | 3.2 | 4 | 5 | 6 | 7 | 8 |
| Max | 1.5 | 2.1 | 2.6 | 3 | 4 | 5 | 6.5 | 8 | 9 | 10.5 | |
| 1,000-piece weight (steel)≈ kg | 0.023 | 0.053 | 0.097 | 0.182 | 0.406 | 0.745 | 1.53 | 2.82 | 4.63 | 6.85 | |
Dimensional Specifications — Nominal Diameter M16 to M48
| Nominal diameter | 16 | （18） | 20 | （22） | 24 | （27） | 30 | 36 | 42 | 48 | |
| d | Min | 16.3 | 18.3 | 20.5 | 22.5 | 24.5 | 27.5 | 30.5 | 36.6 | 42.6 | 49 |
| Max | 16.9 | 19.1 | 21.3 | 23.3 | 25.5 | 28.5 | 31.5 | 37.8 | 43.8 | 50.2 | |
| h | Public | 4 | 4.5 | 5 | 5 | 6 | 6 | 6.5 | 7 | 8 | 9 |
| Min | 3.8 | 4.3 | 4.8 | 4.8 | 5.8 | 5.8 | 6.2 | 6.7 | 7.7 | 8.7 | |
| Max | 4.2 | 4.7 | 5.2 | 5.2 | 6.2 | 6.2 | 6.8 | 7.3 | 8.3 | 9.3 | |
| n | Min | 3.8 | 4.3 | 4.8 | 4.8 | 5.8 | 5.8 | 6.2 | 6.7 | 7.7 | 8.7 |
| Max | 4.2 | 4.7 | 5.2 | 5.2 | 6.2 | 6.2 | 6.8 | 7.3 | 8.3 | 9.3 | |
| H | Min | 8 | 9 | 10 | 10 | 12 | 12 | 13 | 14 | 16 | 18 |
| Max | 10.5 | 11.5 | 13 | 13 | 15 | 15 | 17 | 18 | 21 | 23 | |
| Nominal diameter | 7.75 | 11 | 15.2 | 16.5 | 26.2 | 28.2 | 37.6 | 51.8 | 78.7 | ||
Key Functions of Spring Washers
🔩
Prevent Looseness
Spring washers provide an additional tightening force to help prevent the loosening of bolts or nuts due to vibration or other factors.
📉
Reduce Vibration
Spring washers reduce vibration in mechanical devices and minimize the impact on connecting parts, protecting them from damage.
⚖️
Disperse Pressure
Spring washers have a certain degree of elasticity, which allows them to disperse the tightening force and help protect connecting parts.
🔧
Adjust Tightening Force
The spring washer can be used to adjust the tightening force, ensuring that connecting parts receive the appropriate pressure.
Why Choose Our Products
✅
Genuine Product Guarantee
💰
Price Discounts
🏭
Manufacturer Direct Sales
🏆
Quality Assurance
Frequently Asked Questions
QWhat is a DIN 127 spring washer?
A DIN 127 spring washer is a helical split washer standardized under the German DIN 127 specification. It is designed to sit beneath a bolt head or nut to provide a locking action, preventing fastener loosening caused by vibration, dynamic loads, or thermal cycling.
QWhat materials are DIN 127 spring washers available in?
DIN 127 spring washers are commonly manufactured from carbon steel, spring steel, and stainless steel (A2 or A4 grade). Carbon steel versions are typically zinc-plated for corrosion resistance, while stainless steel grades are preferred for marine, outdoor, or chemically exposed environments.
QWhat size range do DIN 127 spring washers cover?
DIN 127 spring washers are available in nominal diameters ranging from M2 to M48, covering a broad spectrum of fastening applications — from small precision instruments and electronics to large-scale industrial machinery and structural assemblies.
QHow does a spring washer prevent bolt loosening?
The helical shape of a spring washer maintains a continuous axial spring force between the fastener and the mating surface. This residual tension counteracts any rotational movement of the bolt or nut, significantly reducing the risk of self-loosening under vibration or impact loads.
QCan DIN 127 spring washers be reused?
In non-critical, low-vibration applications, spring washers may be reused if they remain undamaged and retain their spring properties. However, for safety-critical or high-vibration assemblies, it is strongly recommended to replace the spring washer each time the joint is disassembled to ensure reliable locking performance.
QWhat is the difference between DIN 127 Form A and Form B?
DIN 127 Form A has sharp, angled ends that bite into the bearing surfaces for maximum grip and anti-loosening effect. Form B features slightly rounded or deburred ends, which reduce the risk of surface scratching or coating damage. Form A is the standard choice for most structural fastening applications, while Form B suits decorative or sensitive surface assemblies.