機(ji)用(yong)鎢鋼(gang)(gang)絲(si)攻(gong)(gong)與手(shou)用(yong)絲(si)攻(gong)(gong)的區別,機(ji)用(yong)絲(si)攻(gong)(gong)通(tong)常(chang)是指高速鋼(gang)(gang)磨(mo)牙(ya)絲(si)攻(gong)(gong),適用(yong)于在機(ji)床上攻(gong)(gong)絲(si);手(shou)用(yong)絲(si)攻(gong)(gong)是指碳(tan)素工具或合金工具鋼(gang)(gang)滾(gun)牙(ya)(或切牙(ya))絲(si)攻(gong)(gong),適用(yong)于手(shou)工攻(gong)(gong)絲(si)。但(dan)在生產中,兩(liang)者(zhe)也可互換(huan)使用(yong)。6HX是專門(men)針對特殊材料的精度(du),各個生產企業所取的都不大一(yi)樣。不一(yi)定是鑄鐵,還有鋁合金、不銹鋼(gang)(gang)