

The Graco 16H554 Adapter Nut is designed for securing 3/8" and 7/16" agitator shafts in Graco back-geared agitator systems. Ideal for pressure tanks and industrial mixing setups.
This Graco 16H554 Adapter Nut is used with Graco back-geared agitator assemblies designed for 3/8 inch and 7/16 inch shafts. It fits the following systems:
The Graco 16H554 Adapter Nut is a precision-machined adapter nut designed for Graco industrial agitator assemblies. It allows the secure mounting of 3/8 inch and 7/16 inch agitator shafts to back-geared agitator motors, ensuring smooth mixing performance and proper shaft alignment.
This genuine Graco part supports industrial finishing systems that require stable shaft connection for heavy-duty mixing of paints, coatings, and other materials in drums or pressure tanks.
This adapter nut is used to connect an agitator shaft to a Graco back-geared agitator assembly, allowing proper alignment and secure rotation during mixing operations.
No, this part is made for Graco agitator and mixing assemblies, not typical airless sprayer pumps or guns. It should only be used with systems requiring a 3/8" or 7/16" agitator shaft adapter.
Check your agitator assembly parts list. If the system requires a 3/8" or 7/16" shaft adapter or specifically lists part 16H554, then this adapter nut is compatible.
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