勾扳手又稱(chēng)月牙形扳手,俗稱(chēng)勾扳子,用于擰轉(zhuǎn)厚度受限制的扁螺母等;于拆裝車(chē)輛,機(jī)械設(shè)備上的圓螺母,卡槽分為長(zhǎng)方形卡槽和圓形卡槽。制作工藝:使用 合金鋼經(jīng)高溫鍛打而成,,.適用圓螺母的外徑范圍:S:22~26S:28~32S:34~36S:38~42S:45~52S:55~62S:68~72S:78~85S:90~95S:100~110S:115~130S:135~145S:150~160S:165~170S:180~200S:200~220S:240~260S:260~280S:280~300S:300~320S:320~350S:360~380S:380~400S:400~420。