Graco 866056 Screw Collar for Airless Paint Sprayers

Graco 866056 Screw Collar — OEM Replacement Pump Part

The Graco 866056 Screw Collar is a genuine OEM replacement component used within the fluid pump assemblies of select Graco/Airlessco airless paint sprayers. It maintains correct alignment and secure fastening of internal pump components, helping ensure smooth fluid delivery and reliable operation under pressure. :contentReference[oaicite:1]{index=1}

Compatible Machines

This part is installed in the internal pump section of the following machines (based on OEM parts diagrams):

• Graco / Airlessco SL800 / 1100 Mustang 11000 Airless Paint Sprayer (fluid pump internal screw) :contentReference[oaicite:2]{index=2}
• Graco / Airlessco Airless Paint Sprayer Model 3A1187H / GS6250-like assemblies (used in pump parts breakdown) :contentReference[oaicite:3]{index=3}

Part Specifications

Installation Notes

• Installed inside the fluid pump housing as shown in OEM parts schematics — not a standalone external accessory. :contentReference[oaicite:4]{index=4}
• Always refer to the original parts diagram for your specific machine before servicing. :contentReference[oaicite:5]{index=5}
• OEM replacement helps preserve factory tolerances and performance. :contentReference[oaicite:6]{index=6}

Frequently Asked Questions