GZ-01-92 – Nut M16x1 / Ø12 – thermoplastic pipes – Brass

GZC-330 – Valve nut – W21,8×1″/14 (left-hand thread)

GZ-02-92 – Nut M16x1 / Ø12 – thermoplastic pipes – steel

GZ-314 – Lock nut – M16x1

GZ-13-30 – Valve nut – W21.8×1″/14 (left-hand thread) – long

GZC-730 – Flare nut – 7/16UNF – ø6