7/8-9nc Hex.Hd.Cap Screw*4" lg.w/(2) Flat Washers and Hex.Lo

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7/8-9nc Hex.Hd.Cap Screw*4" lg.w/(2) Flat Washers and Hex.Lock Nut w/Nylon Insert
1-8nc Hex.Hd.Cap Screw*4 1/2" lg..w/(2) Flat Washers and Hex.Lock Nut w/Nylon Insert 求翻译,这两个美制标准件不能完全看懂,

flat washer是平垫片,hex,lock nut是六方锁母,nylon insert是母孔内的尼龙锁圈,hd是端部的,cap screw是碗型封堵,hex是六方的,

7/8-9nc Hex.Hd.Cap Screw*4" lg.w/(2) Flat Washers and Hex.Lo 工程机械英语翻译hex cap与hex cap screw 的区别英语翻译HEX HD BOLT P/TH IN STAINLESS STEEL 304 ,HEX HD SCREW F/ HEX LAG SCREW什么意思? 3/4"*100mm LG STUD BOLTS ASTM A193 GR.B7 C/W 2 HEAVY HEX NUT U BOLT,NON-GRIP,M10,FOR 2" PIPE,C/W 4 HEX FULL NUTS & 4 PLAI HEX TKS SCREW WITH BONDED WASHER 怎么翻译, 螺丝英文描述“SCREW, #12-24 X 1/2" LONG HEX-HEAD-SLOTTED”怎么翻译?规格是英制 hex是什么意思 U型螺栓,U BOLT,NON-GRIP,M10,FOR 2" PIPE,C/W 4 HEX FULL NUTS & 4 HEX NIPPLE FITTING,MALE 1/2" NPT HEX DEC 是什么?