Graco 105334 Hex Lock Nut

The Graco 105334 Hex Lock Nut is a precision-engineered OEM fastener that ensures secure, vibration-resistant assembly in Graco spray equipment.

M4 × 0.7 fine-thread hex lock design
Prevents loosening under high-pressure operation
Made from durable, corrosion-resistant alloy steel
Fits XTR, SGPro, Contractor, and SG series sprayers
Maintains reliable performance and system integrity

$12.26

Based on 0 reviews

Description

Compatible Machines

Graco XTR series airless sprayers
Graco SGPro and SG20 series spray systems
Graco Contractor, FTx, SG2 and SG3 models
Any Graco pump, hose reel or module using an M4 × 0.7 fine-thread lock nut

Graco 105334 Hex Lock Nut

Product Overview

The Graco 105334 Hex Lock Nut is a high-precision locking fastener engineered for retention of critical assemblies within professional airless sprayer and coating systems. Its fine-thread profile and secure hex design resist loosening under vibration, pressure cycles and high-stress environments.

This genuine Graco component ensures exact fit, thread integrity and performance consistency in demanding applications, supporting long-term reliability in spray systems used by contractors and industrial finishers.

Design & Material Specifications

Thread Specification	M4 × 0.7 fine-thread profile for secure locking engagement
Type	Hexagonal lock nut designed to maintain clamp force and resist backing-off
Material & Finish	Hardened stainless steel (17-4 PH) with corrosion-resistant plating for durability in harsh environments
Application Environment	Suitable for high-pressure spray and coating systems, hose reels, pump modules exposed to cyclic loads
Performance Features	Precision machining to tight tolerances ensures consistent preload and torque retention under heavy use

Installation & Maintenance Guidelines

• Inspect mating threads and surfaces before installation to ensure a clean and accurate fit.
• Hand-start the nut, then apply calibrated torque to the specified value to engage the locking mechanism properly.
• During scheduled maintenance, check for any sign of wear, corrosion or thread distortion — replace the nut if compromised.
• For optimal performance, a light film of compatible lubricant may be applied to threads to prevent galling and ease future servicing.

Using the genuine Graco 105334 Hex Lock Nut helps maintain system integrity, reliable fastening and consistent operation in your Graco spray equipment.

User Application & Field Insights

Ideal for high-frequency usage where vibration or cyclic pressure might compromise fasteners.
Regular users report improved maintenance efficiency and better system stability with Graco genuine parts.
Often stocked as part of maintenance kits due to low replacement frequency but high criticality.
Designed to support long operational life of spray systems by reducing the risk of component loosening or failure.

In short, the Graco 105334 Hex Lock Nut provides a dependable fastening solution that contributes to reduced downtime and improved reliability of professional spray equipment.

Frequently Asked Questions

The Graco 105334 Hex Lock Nut fits into a variety of Graco XTR, SGPro, SG20, Contractor, FTx, SG2, SG3 series machines and assemblies. Always confirm with your machine’s parts diagram before installation.

While generic lock nuts with the same size may be available, using the genuine Graco 105334 Hex Lock Nut ensures exact thread geometry, material grade and locking characteristics required for high-pressure spray systems.

Inspection should be part of your routine maintenance schedule, especially after heavy use, high pressure cycles or vibration exposure. Replace the nut if there are signs of wear, corrosion, thread damage or decreased locking performance.