Product Numbers: YJB

Product description: It's necessary to note it. 「JIS B 5012」There is restriction on tolerance to the outside diameter and inside diameter,「ISO 10243」There is no restriction on tolerance to the outside diameter and inside diameter of springs. 「ISO 10243」 is the standard which restricted the hole diameter and the shaft diameter of a spring which enter.If you need to know the size of the outside diameter and the inside diameter before uses.