DIN127 Spring Lock Washers
DIN 127 Spring Lock Washers are split helical washers designed to provide spring action and maintain pressure in bolted connections. The angled ring structure creates elastic tension when compressed between the bolt head or nut and the fastening surface, helping improve resistance to loosening caused by vibration and dynamic loads. These washers are commonly used together with DIN 933 hexagon head bolts, DIN 934 hex nuts, and DIN 125 flat washers to form reliable fastening assemblies.
Available in diameters from Ø2 mm to Ø100 mm, DIN 127 spring lock washers are manufactured from spring steel and stainless steel A2/A4 for different application environments. Various surface finishes and material options allow these washers to be used in machinery, industrial equipment, electrical assemblies, and general mechanical fastening applications where additional spring force and reliable bolt retention are required.
Specification:
The specification of DIN 127 Spring Lock Washers covers the dimensional requirements, material selection, and surface treatment options for different fastening applications. Key specifications include inside diameter, outside diameter, thickness, free height, washer type, material grade, and finish requirements to ensure proper fitting with corresponding bolts and nuts.
DIN 127 washers are available in standard split spring designs with diameters from Ø2 mm to Ø100 mm. Common material options include spring steel for general mechanical applications and stainless steel A2/A4 for environments requiring improved corrosion resistance. Surface finishes such as zinc plating, black oxide, and customized coatings can be supplied according to application requirements.
| Standard | DIN127 |
|---|---|
| Product Type | Spring Lock Washer/Split Lock Washer |
| Design | Helical Split Ring |
| Inner Diameter: | Φ2-Φ100 |
| Hardness | 430-530HV |
| Material | Spring Steel,Stainless Steel A2,Stainless Steel A4 |
| Surface Treatment | Bright Finish,Zinc Plated,Black Oxidation |
- RELATED WASHER LISTS:
- DIN125 Flat Washer
- DIN127 Spring Lock Washer
- F436 Hardened Steel Washers
- DIN9021 Large Washer
- ASME/ANSI B 18.21.1 (USS) Flat Washer
- ASME/ANSI B 18.21.1 (SAE) Flat Washer
- ASME/ANSI B18.21.1 Helical Spring-Lock Washer
- DIN25201 Stainless Steel Double Fold Self-locking Washer
- DIN6797A Stainless Steel External Teeth Lock Washers
- Stainless Steel DIN6797J Internal Teeth Lock Washers
Dimension Chart of DIN127 Spring Lock Washers:
The dimension chart of DIN 127 Spring Lock Washers provides the key measurements required for proper selection and assembly with matching bolts and nuts. The chart includes important dimensions such as inside diameter (d1), outside diameter (d2), material thickness (s), and free height (h), which define the washer size, spring effect, and installation compatibility.
When selecting DIN 127 spring lock washers, the inside diameter should match the nominal bolt size, while the outside diameter and thickness determine the supporting area and spring performance after installation. Washers are available in different diameters from Ø2 mm to Ø100 mm according to DIN 127 specifications, with dimensional control maintained to ensure proper fit with DIN 933 bolts, DIN 934 nuts, and other standard fastening components.
| Mon | Φ3 | Φ3.5 | Φ4 | Φ5 | Φ6 | Φ7 | Φ8 | Φ10 | Φ12 | Φ14 | Φ16 | Φ18 | Φ20 | Φ22 | Φ24 | Φ27 | Φ30 | Φ36 |
| d min | 3.1 | 3.6 | 4.1 | 5.1 | 6.1 | 7.1 | 8.1 | 10.2 | 12.2 | 14.2 | 16.2 | 18.2 | 20.2 | 22.5 | 24.5 | 27.5 | 30.5 | 36.5 |
| d max | 3.4 | 3.9 | 4.4 | 5.4 | 6.5 | 7.5 | 8.5 | 10.7 | 12.7 | 14.7 | 17 | 19 | 21.2 | 23.5 | 25.5 | 28.5 | 31.7 | 37.7 |
| b max | 1.4 | 1.4 | 1.6 | 1.9 | 2.65 | 2.65 | 3.15 | 3.7 | 4.2 | 4.7 | 5.2 | 5.2 | 6.2 | 6.2 | 7.25 | 7.25 | 8.25 | 10.25 |
| b min | 1.2 | 1.2 | 1.4 | 1.7 | 2.35 | 2.35 | 2.85 | 3.3 | 3.8 | 4.3 | 4.8 | 4.8 | 5.8 | 5.8 | 6.75 | 6.75 | 7.75 | 9.75 |
| h max | 0.9 | 0.9 | 1 | 1.3 | 1.7 | 1.7 | 2.1 | 2.35 | 2.65 | 3.15 | 3.7 | 3.7 | 4.2 | 4.2 | 5.2 | 5.2 | 6.2 | 6.2 |
| h min | 0.7 | 0.7 | 0.8 | 1.1 | 1.5 | 1.5 | 1.9 | 2.05 | 2.35 | 2.85 | 3.3 | 3.3 | 3.8 | 3.8 | 4.8 | 4.8 | 5.8 | 5.8 |
| H min | 1.9 | 1.9 | 2.1 | 2.7 | 3.6 | 3.6 | 4.6 | 5 | 5.8 | 6.8 | 7.8 | 7.8 | 8.8 | 8.8 | 11 | 11 | 13.6 | 13.6 |
| H max | 2.1 | 2.2 | 2.5 | 3.2 | 4.2 | 4.2 | 5.4 | 5.9 | 6.8 | 8 | 9.2 | 9.2 | 10.4 | 10.4 | 13 | 13 | 16.1 | 16.1 |
| dc max | 6.2 | 6.7 | 7.6 | 9.2 | 11.8 | 12.8 | 14.8 | 18.1 | 21.1 | 24.1 | 27.4 | 29.4 | 33.6 | 35.9 | 40 | 43 | 48.2 | 58.2 |
Application of DIN127 Spring Lock Washers:
DIN 127 Spring Lock Washers are widely used in bolted assemblies where additional spring force and bolt retention are required. Spring steel versions, typically supplied with high hardness and elastic properties (commonly around 430-530 HV depending on material and heat treatment), are suitable for mechanical equipment exposed to vibration and dynamic loads, including industrial machines, automation systems, pumps, motors, gearboxes, and heavy-duty equipment assemblies.
Stainless steel A2 and A4 DIN 127 washers are selected for applications requiring improved corrosion resistance and long-term durability. They are commonly used in electrical equipment, outdoor installations, food processing machinery, marine equipment, and stainless steel fastening assemblies where moisture or corrosive environments may affect the connection. Available in different diameters and thicknesses, DIN 127 spring lock washers can be matched with DIN 933 bolts, DIN 934 nuts, and other fastening components according to assembly requirements.