Gast · Screw / bolt / nut
K963
Retainer screw
Manufacturer’s part number
Where to get it
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As printed in the source
5Δ | K963 | Head o-ring | 4 (read by Claude, checked against the page)
Fits 37 models
As listed by GastWhen ordering, give the model and serial number from the nameplate: some parts changed within a model’s life.
Part number, name and fitment as published by Gast (source), retrieved 2026-10-21. Vac & Air is independent and not affiliated with the manufacturers shown; names and numbers identify the parts only.