Graco 115643 Screw Machine Hex Washer Head

Compatible Assemblies for Graco 115643 Screw Machine Hex Washer Head

The Graco 115643 Screw Machine Hex Washer Head is a factory‑specified fastener used in various Graco pump and spray‑system assemblies to ensure strong, vibration‑resistant mounting with even load distribution — thanks to its built‑in washer head.

• Graco pneumatic/diaphragm pumps and air‑valve housings where part #115643 is listed (e.g. inlet/outlet covers, valve covers) :contentReference[oaicite:5]{index=5}
• Sprayer and fluid‑handling systems requiring secure machine‑screw mounting under pressure/ load :contentReference[oaicite:6]{index=6}
• Any Graco module with parts‑diagram specifying mach‑hex‑washer‑head screw 115643 for structural fastening or cover mounting :contentReference[oaicite:7]{index=7}

Frequently Asked Questions