CPC Subgroup
F16B 33/02 Shape of thread; Special thread-forms (; used as screw-locking device F16B39/30)
Full Title
Features common to bolt and nut > Shape of thread; Special thread-forms (; used as screw-locking device F16B39/30)
2 direct subcodes
Child Classifications
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- F16B 33/04 in view of tensile load