Ensure secure fastening and high-pressure reliability with the Graco 106166 Hex Machined Nut, designed for demanding spray system assemblies.
The 106166 Hex Nut is engineered as a critical fastening component within high‑performance fluid delivery systems. Designed to maintain precise clamping and axial preload on sealing assemblies, it supports high‑pressure operation and helps prevent micro‑leakage under cyclic loads.
| Material | Precipitation‑hardening stainless steel (17‑4 PH) |
|---|---|
| Tolerance Class | ISO 2768‑mH precision machining |
| Thread Profile | Buttress or fine‑pitch profile optimized for axial load distribution |
| Finish | Electroless nickel plating plus passivation for corrosion resistance |
| Performance Rating | Designed for cyclic pressures up to ~6000 psi with high fatigue life |
Precision‑machined with concentricity and surface flatness control, this hex nut features a polished bearing face and optimized internal bore to minimise turbulence. Its high‑strength alloy and protective plating enable sustained performance in demanding finishing environments with solvent‑based or high‑viscosity coatings.
When installed in pump manifold and sealing assemblies, the 106166 Hex Nut ensures consistent clamp force, preserves seal integrity and reduces pressure pulsation. Its robust construction supports high‑volume operations and frequent service cycles, contributing to reliable system uptime.
Use a calibrated torque wrench and follow the system manufacturer’s torque sequence. Ensure the bearing surface is clean and flat, apply compatible anti‑seize if recommended, then re‑check torque after initial warm‑up. Inspect at regular intervals for thread wear, head rounding, corrosion or flattening and replace if any degradation is observed.
Each nut is manufactured under strict traceability controls with dimensional inspection, hardness testing and finish thickness verification. The result is a high‑precision component engineered for professional finishing applications where reliability and longevity matter.
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