护丝帽；NC26NC31NC36NC38N***0N***6①N***6②NC50①NC50②NC50③6-5/8REGNC66NC617-5/8REGNC703-1/2REG3-1/2FH4-1/2REG4-1/2FH5-1/2REG5-1/2FHNC502-3/8REG(230A231A)2-7/8REG(230231)3-1/2REG(330331)4-1/2REG(430431)5-1/2REG(530531)6-5/8REG(630631)7-5/8REG(730731)8-5/8REG(830831)2-7/8FH(220221)3-1/2FH(320321)4FH(420A421A)4-1/2FH(420421)5-1/2FH(520521)6-5/8FH(620621)2-3/8IF(210A211A)2-7/8IF(210211)3-1/2IF(310311)4-1/2IF(410411)4IF(410A411A)5-1/2IF(510511)NC35N***4NC56NC61)