Single coil spring lock washers,Light type

Name: Single coil spring lock washers, Normal type
(i) The test values for the spring force test described in DIN 267-26 have not been specified for this nominal size.
(ii) The test values for the permanent deformation test described in DIN 267-26 have not been specified for this nominal size.
(iii) Technical requirements
DIN 267-26 applies to technical requirements for spring lock washers made of spring steel. Technical requirements for spring-loaded lock washers made of copper-zinc alloys are according to the agreement.
Material:
FSt = spring steel as specified in DIN 267-26 or CuSn 8 standard DIN 17662 (only for nominal sizes 22 and smaller).
Safety ring: St = steel.
CuZn = copper-zinc alloy.
④, Explanatory note

By maintaining a sufficiently high preload in the bolt/nut assembly, the spring washers are designed to prevent the assembly from loosening. This may e.g. be caused by the effect of setting in the assembly. The specification of the residual spring force in DIN 267-26 makes it possible to evaluate the performance of spring washers for the first time. As the spring force can be realized by using spring locking washers as described in this standard (see DIN 267-26), such washers are only suitable for bolt/nut assemblies for bolts of performance class 5.8 or smaller. When spring lock washers with safety rings were developed, the heat treatment methods available at the time did not ensure that the washers would not break during use. The purpose of the safety ring was to retain pieces of the washer in the event of rupture, thereby preventing further damage from occurring, particularly in the case of electrical installations. This issue has now been resolved and it is intended to withdraw the standard after a five-year transition period. It is recommended that the spring locking washers specified in DIN 128 be used instead of the spring locking washers specified in this standard.    

The spring washer material must be 65MN rigid or 304 stainless steel, mainly due to the advantages of the spring washer material and their respective applications, such as 65 spring steel performance is similar to the 70 spring steel, elasticity and strength is slightly higher, suitable for the manufacture of a small cross-section, the strength requirements are not high, the general machine round, square coil spring washers, such as automobiles, tractors or train machinery vibration flat plate springs, round coil spring washers.    

Size Can also be According to the Customer's requirement please check the detailed specification sheet details PDF， CAD, 3-4Page See more product details.    

Packing: The inner packaging consists of polyfoam, while the outer layer is a carton. The carton sizes are 29*19*19.5 cm and 23.5*17.5*8 cm, respectively. The pallet dimensions are 215*100*90 cm, or they can be customized according to your requirements.