ANVER Vacuum Cups and Suction Cups Vacuum Cup Fittings – Female-to-Female Connection AdaptersPart Number: HS5-5F Vacuum Fitting Part No. Connection Thread Size Thru Hole Diameter in. (mm) or thread Hex Size in. (mm) LOverall Height Added to Assembly in. (mm) HS5-5F M5 (5mm) female – M5 (5mm) female 0.17 (4.3) 0.31 (8) 0.43 (11.0) Material: All-metal, electro-less nickel-plated brass fitting