Spring washers covered by the DIN 127 standard published by the German Institute for Standardization (DIN) are spring washers designed for use with bolted assemblies containing fasteners of property class 5.8 or lower. This standard is designed to eliminate the setting effect that causes bolt assemblies to run loose. Such washers do not effectively prevent the assembly from loosening under varying radial load and are designed for use with short bolts that are predominantly subjected to stress.
Similarly, the BS 4464B standard published by the British Standards Institute (BSI) describes the dimensions, tolerances and general requirements for metric series spring washers with helical structure for use with metric threaded fasteners in the diameter range of 1,6 mm to 68 mm (BS 4464B Spring Loaded). washers – Metric stainless steel spring washers and washers).
Spring washers are lock washers used when there is a need to prevent a fastener from loosening as a result of vibration. A spring washer has a slot in the washer section that, when tightened, inserts both sides of the split into the nut and mounting surface. This prevents any counterclockwise rotation under vibration. There are two types of spring washer as square and rectangular sections. This refers to the shape of the split end section. Viewed from above, rectangular spring washers appear flatter than square-section variants, which appear much more rounded.
Spring washers use tension force to lock the nut in place. When the washer is tightened under load, the vertically cut ends of the washer hold the nut and attach to it. When the nut is fully tightened, the slot in the washer should be slightly out of alignment. This is visual proof that the spring washer is working as intended and exerting a force on the fastener.
Among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, our organization, with its trained and expert staff and advanced technological equipment, is within the scope of DIN 127 standard, for square-end or pointed-end spring lock washers and within the scope of BS 4464B standard, metric also provides testing services for stainless steel spring washers and washers.
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