Product Specifications
| Model / Specification | M3 - M30 |
| Material | Carbon Steel |
| Spec. | 3 | 4 | 5 | 6 | 8 | 10 | 12 | (14) | 16 | (18) | 20 | (22) | 24 | (27) | 30 | |
| d | Min. | 3.2 | 4.3 | 5.3 | 6.4 | 8.4 | 10.5 | 13 | 15 | 17 | 19 | 21 | 23 | 25 | 28 | 31 |
| Max. | 3.5 | 4.6 | 5.6 | 6.76 | 8.76 | 10.93 | 13.43 | 15.43 | 17.43 | 19.52 | 21.52 | 23.52 | 25.52 | 28.52 | 31.62 | |
| dc | Min. | 7.42 | 8.42 | 10.3 | 11.3 | 14.3 | 20.16 | 23.16 | 27.16 | 29 | 33 | 35 | 39 | 43 | 49 | 54.8 |
| Max. | 8 | 9 | 11 | 12 | 15 | 21 | 24 | 28 | 30 | 34 | 36 | 40 | 44 | 50 | 56 | |
| H | Min. | 0.8 | 1 | 1.1 | 1.3 | 1.5 | 2.1 | 2.5 | 3 | 3.2 | 3.3 | 3.7 | 3.9 | 4.1 | 4.7 | 5 |
| Max. | 1.6 | 2 | 2.2 | 2.6 | 3 | 4.2 | 5 | 5.9 | 6.3 | 6.5 | 7.4 | 7.8 | 8.2 | 9.4 | 10 | |
| h | 0.5 | 0.5 | 0.5 | 0.5 | 0.8 | 1 | 1.2 | 1.5 | 1.5 | 1.5 | 1.6 | 1.8 | 1.8 | 2 | 2 | |
| Wt./1,000 pcs (steel) | 0.14 | 0.16 | 0.24 | 0.27 | 0.66 | 1.81 | 2.7 | 4.71 | 5.07 | 6.69 | 7.68 | 10.94 | 13.5 | 19.81 | 25.02 | |
Product Introduction
The wave spring washer (GB/T 955-1987) is an elastic washer bent in a wave shape along its circumference. After tightening, the wave structure generates axial elastic reaction force, providing locking, vibration damping, and clearance compensation. The washer is usually made of spring steel, such as 65Mn or 60Si2Mn. After quenching and tempering, the hardness is generally controlled at HRC 40–50. Common surface treatments include blackening, phosphating, and zinc plating. The wave spring washer is suitable for threaded connections that require a certain anti-loosening effect without damaging the surfaces of the connected parts.
1. Product Features
• Wave-shaped elastic structure: The washer is wavy overall and can produce uniform axial elastic deformation when loaded.
• Good elastic recovery: Made of spring steel and heat-treated, it has excellent elastic recovery performance.
• No damage to workpiece surfaces: Unlike the biting action of split spring washers, the wave washer generates spring force through surface contact and is less likely to scratch the contact surface.
• Moderate hardness: Common material hardness is HRC 40–50, balancing elasticity and wear resistance.
• Standardized dimensions: Conforms to GB/T 955-1987, making selection and interchangeability convenient.
• Various surface treatments: Blackening, phosphating, zinc plating, and other treatments are available to improve corrosion resistance and appearance.
2. Product Advantages
• Stable anti-loosening: The wave elastic reaction force increases the friction in the threaded joint, providing reliable locking with uniform force distribution.
• Cushioning and vibration damping: The wave structure can absorb part of the vibration and impact energy, making it suitable for equipment with vibration.
• Protects connection surfaces: It does not embed into the material like external tooth lock washers, so it is suitable for parts with higher surface requirements.
• Compensates for clearance: It can compensate for a small amount of axial clearance during assembly and improve connection stability.
• Easy installation: It is placed directly on the bolt or screw and requires no special tools.
• Economical and practical: Low manufacturing cost and good versatility make it suitable for mass use.
3. Scope of Application
• Electronics and electrical appliances: Screw connections inside household appliances, instruments, and electronic equipment.
• Automotive industry: Light-load anti-loosening parts such as interior trim, instrument panels, and electrical boxes.
• Precision machinery: Office equipment, optical instruments, small motors, and other applications requiring smooth anti-loosening.
• Communication equipment: Thin panels or precision connections in chassis, cabinets, and connectors.
• Hardware products: Lamps, locks, toys, and various small assembly parts.
• Other anti-loosening applications: Suitable for threaded connections where spring washers or toothed washers are not appropriate and where the surface must not be damaged.
