* Use it wherever heavy hex nuts are used.使用它無用于型六母。* Eliminate tedious turning.*消冗的折。* Ignore damaged or corroded threads.*忽略損壞或的紋。* No cross threading.*無交叉線。* ASTM A194 Grade 2H equivalent.* ASTM A194等級2當。* Fits standard bolts.*符合標準的栓。* Also available in plastic.塑料也可*。* ZipNuts? measure one wrench size larger across the flats than standard heavy hex nuts..* zipnuts?測一個扳手尺寸大的在整個單位比標準的型六母..* Heavy Hex Nuts are in compliance with SA 194 (Nuclear Applications).*型六母是與SA 194依從性核應用。