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

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

GZ-321 – Nut W 21.8×1/14” LH / Ø16.2 – L=18

GZ-315 – Lock nut – M18x1

GZ-311 – Lock nut – M10x1

GZ-313 – Lock nut – M14x1