标准:
标准库
(9)
UNI 5737-1977Metric hexagon head bolts
UNI 5739-1965Hexagon head screws threaded up the head
UNI 5732-1965Mushroom head square neck bolts
UNI 6105-1976Flat head bolt with reverse key
UNI 5712Hexagon bolts with large width across flats for high strength structural bolting
UNI 5740Hexagon head bolts with fine pitch thread
UNI 5725Hexagon head bolts-Full thread
UNI 5738Hexagon head bolts with fine pitch thread
UNI 5731Mushroom head square neck bolts