Introduction1 Scope2 Normative references3 Terms and definitions4 Dimensions, materials and finish5 Design and construction6 Quality and test method 7 MarkingAnnex A (normative) - Octagonal base closure system (Type A closure)Annex B (normative) - Serrated base closure system (Type B closure)Annex C (normative) - Octagonal G[2]/hexagonal G[3/4] base closure system (Type C closure)Annex D (informative) - Plug wrench adaptorsAnnex E (informative) - Closing torquesAnnex JA (normative) - Thread dimensions of closures, dimensional test of thread and thread limit gauges for inspectionAnnex JB (informative) - Dimensions of closure thread corresponding to thread limit gauges for inspectionAnnex JC (informative) - Comparison table between JIS and corresponding International Standard