ASME B18.2.1-2012方头、六角、重六角和斜头螺栓和六角、重六角、六角法兰叶形头和方头螺钉英制系列) (2021)（英文版）.pdf

ANAMERICANNATIONALSTANDARDASMEB18.2.1-2012Square,Hex,HeavyHex,andAskewHeadBoltsandHex,HeavyHex,HexFlange,LobedHead,andLagScrews(In...