The Graco 100307 Nut is a precision-engineered stainless steel hex nut (3/8"-16) designed for demanding airless sprayer systems. Measuring 0.35 x 0.5 x 0.5 inches, this compact component ensures secure seals within regulator and coupler assemblies. Crafted to withstand solvents, it delivers leak-free performance under the pressures encountered in high-pressure filtration modules for professional coatings. As a critical piece among graco airless sprayer parts, it helps maintain consistent spray patterns and prolong equipment service intervals.
This durable nut resists corrosion, wear, and chemical attack for extended service life in industrial and commercial settings. Its precision-threaded design enables quick, tool-free adjustments and streamlines routine maintenance to reduce downtime. Compatible with a wide range of Graco regulators, pumps, and finishing equipment, it plays a vital role in delivering consistent, high-quality finishes. As one of the essential graco paint sprayer accessories, the 100307 Nut upholds Graco’s reputation for dependability in both new installations and system overhauls.
$7.49The Graco 100307 nut represents a critical fastening component in high-pressure fluid delivery and control systems. Engineered to strict tolerances, this hexagon nut features a 3/8"-16 thread profile and a precision-machined hex head geometry measuring 0.35 inches across the flats. Weighing just 0.015 pounds, its compact dimensions (0.35 x 0.5 x 0.5 inches) contribute minimal mass and volume to intricate assemblies. Manufactured under rigorous quality processes, this nut ensures consistent thread engagement and optimal torque distribution across pump manifolds, hose couplings, and regulator interfaces. In demanding spray applications, it enhances seal longevity and contributes to robust pump efficiency characteristics. It is often specified for use in the graco magnum x7 paint sprayer family to maintain consistent performance across professional airless sprayer circuits.
The material composition of the Graco 100307 nut directly influences its resistance to abrasion and chemical attack during prolonged exposure to solvent-based or waterborne coatings. Manufactured from high-strength carbon steel with a precision zinc phosphate finish, this nut exhibits optimized corrosion resistance in harsh industrial environments. Its robust hex profile delivers reliable torque transfer up to 200 inch-pounds, ensuring consistent clamping force in professional coatings systems. Integration with filter assemblies leverages advanced high-pressure filtration stacks in the pump head to maintain fluid purity and prevent particulate abrasion. It complements other graco 395 paint sprayer parts to harmonize system performance.
The Graco 100307 nut incorporates a standard 3/8”-16 UNC thread form that complies with ANSI B1.1 guidelines for Unified Coarse screw threads. Precision cutting is performed via CNC machining centers to maintain thread pitch tolerance within ±0.002 inches. The hexagonal head dimension of 0.35 inches across flats offers ample surface area for socket and wrench engagement, reducing risk of tool slippage during high-torque installation. Surface treatments, including phosphate conversion coatings, provide exceptional lubrication during assembly and contribute to improved seal longevity under cyclical loading conditions in airless sprayer manifolds and pump housings.
Extensive testing under controlled laboratory conditions reveals that the 100307 nut maintains consistent clamp force across a range of torque values spanning 50 to 200 inch-pounds, with average preload retention exceeding 85% after 1,000 load cycles. Its fatigue resistance is validated through accelerated life testing simulating pressure pulsations typical in high-pressure filtration modules. Dimensional stability is showcased by sub-0.005 inch variation in thread depth after repeated assembly, ensuring ongoing reliability in dynamic environments. This performance translates directly to enhanced operational efficiency and reduced downtime in professional-grade coating applications.
The compact footprint of the 100307 nut allows seamless integration into a variety of Graco pump assemblies, manifolds, and regulating devices. Its low-profile design minimizes obstruction in tight installation zones, enabling efficient routing of high-pressure hoses and quick coupling adapters. By supporting standardized thread patterns and head dimensions common to pump inlet and outlet fittings, it streamlines maintenance procedures on multiple equipment platforms. The nut’s robust construction and consistent thread quality ensure leak-free joints critical to airless sprayer performance, meeting the exacting standards of professional coatings and fluid handling operations.
Routine inspection of the 100307 nut is recommended during scheduled system maintenance to verify torque integrity and thread condition. Over time, exposure to abrasive particulates and high-pressure spray cycles can introduce micro-wear that impairs seal longevity. In cases requiring nut replacement, technicians often opt for a graco replacement pump only approach, selectively refreshing core components while retaining existing manifolds and hoses. This targeted strategy maximizes pump efficiency, reduces waste of reusable parts, and extends overall service intervals for premium airless sprayer installations.
In summary, the Graco 100307 nut serves as a fundamental component in advanced fluid control systems, offering precision thread engagement, corrosion resistance, and verified performance under rigorous test protocols. Its compatibility with a wide range of Graco devices, including high-pressure filtration units and professional coatings equipment, underscores its versatility. By adhering to strict manufacturing tolerances and leveraging proven material science, this hex nut contributes directly to optimized pump efficiency, reduced maintenance downtime, and enhanced operational safety. Engineers specifying components for sophisticated coating lines or airless sprayer platforms will find that the 100307 nut reliably meets demanding industrial requirements.
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