... ribbed bars HRB335 and HRB400 screw threaded sleeve 1.Full thread,Half thread coupling 2.Surface: galvanized, zinc,Black finishing 3. ... Quality and Competitive Prices 1)- Size: 1/8"~6"2)- Thread: BSPT, DIN (ISO7/1, DIN 2999, ANSI B1.20 ... , Electro Galvanized, Black6)- Type: Heavy & Medium, Full & Half7)- Shape & Appearance: Beveled ends, Full internal threads, half thread8)- Color: Black, White ( ...