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Graco 109209 Hex Lock Nut

The Graco 109209 Hex Lock Nut is a durable self-locking nut designed to secure high-pressure pump assemblies and prevent loosening due to vibration.

  • Stainless steel construction for corrosion resistance
  • Precision M10 hex profile for secure fit
  • Ideal for Graco Monark 23:1 Airless Pumps and 1:1 Extruder Systems
  • Self-locking feature prevents loosening under vibration

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Graco 109209 Hex Lock Nut Overview

The Graco 109209 Hex Lock Nut is a precision-engineered self-locking fastener for high-pressure spray systems. Designed for airless sprayer applications, it provides a reliable seal, maintains pump efficiency, and prevents leakage under extreme operating conditions.

Key Features

  • Durable 316 stainless steel construction resists corrosion
  • Precision-machined M10 hex profile for secure fit
  • Lightweight design at approximately 0.065 lbs
  • Self-locking feature prevents vibrational loosening

Compatible Machines

Machine Name Application
Graco Monark 23:1 Airless Spray Pump Secures tie rods and pump manifold connections
Graco 1:1 Extruder Systems Used in extruder pump assemblies for high-pressure seal
Graco 360 Paint Sprayer Parts Integration with pump manifold blocks and adapter fittings

Frequently Asked Questions

It is made from marine-grade 316 stainless steel, offering high corrosion resistance and tensile strength for demanding high-pressure applications.

Install using a calibrated torque wrench set to manufacturer-recommended values. Lightly lubricate threads with PTFE-based compound for easier assembly without compromising self-locking.

It fits Graco Monark 23:1 Airless Spray Pump, 1:1 Extruder Systems, and Graco 360 Paint Sprayer parts. Check your machine’s parts manual to confirm compatibility.

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