Introducing the Graco 17E789 cap screw crafted from premium stainless steel to ensure reliable performance in demanding spray applications. Measuring 3/8″ in diameter with a 2.25″ length, this precision-machined component secures manifold assemblies and critical seals for industrial and commercial sprayers. Engineered for optimal corrosion resistance, it maintains strict tolerances under extreme pressure. Whether retrofitting a legacy sprayer or upgrading to the latest air operating system, this screw is essential for maintaining proper fit and function within your airless sprayer equipment.
Ideal for applications involving heavy-duty hydraulic circuits, high-pressure fluid delivery, and intricate spray heads on both small and large-scale equipment, this Graco screw supports precision control and leak-free sealing. Its robust design withstands the rigors of industrial coating processes and enhances the longevity of pumps and valves. Perfect for use with professional coatings and advanced high-pressure filtration systems, it delivers consistent results in the most challenging environments.
$6.3Graco 17E789 SCH Cap Screw 3/8 x 2.25 SST represents a critical fastening component engineered to deliver reliable performance under high pressure. Featuring premium-grade stainless steel, this part ensures robust attachment and resistance to operational stresses within fluid delivery assemblies. Consistent thread engagement and dimensional accuracy align with industry standards, offering integration confidence in demanding environments. Meticulous quality control verifies each screw against stringent tolerances, supporting longevity and seamless assembly in professional-grade equipment. Application versatility spans industrial, commercial, and maintenance scenarios, underscoring its role as a dependable replacement or upgrade option.
Cutting-edge manufacturing techniques, such as cold heading followed by precision machining, form the backbone of this cap screw’s superior performance. Achieving a uniform grain structure throughout the body enhances shear strength and fatigue resistance. Controlled heat treatment processes elevate material hardness while preserving ductility, ensuring the fastener accommodates dynamic loads without premature failure. Thread geometry conforms to Class 3A specifications, reducing risk of galling and improving torque consistency. Integration into specialized assemblies benefits from a tight fit tolerance, eliminating unwanted play at critical junctions and safeguarding against pressure-induced leaks. Advanced optical inspection systems detect minute surface anomalies before packaging, ensuring every unit meets strict acceptance criteria. Such diligence not only guarantees consistency across batches but also reduces rework, accelerating assembly line throughput and minimizing operational downtime.
Grade 18-8 stainless steel provides exceptional defense against corrosive agents encountered in spray environments. Organically passivated surfaces inhibit oxidation, even when exposed to solvents, moisture, and cleaning agents common in painting operations. Engineers recognize that maintaining a smooth thread finish is vital for long-term reliability. Compatibility with textured coatings comes into play when servicing texture booths or mixing heads for texture paint sprayer configurations, ensuring the fastener withstands chemical exposure without compromising thread integrity. Enhanced passivation contributes to a uniform protective oxide layer that remains stable under fluctuating temperature and pH conditions. Field testing in salt spray chambers confirms minimal weight loss over prolonged exposure, demonstrating the fastener’s suitability for harsh operating environments.
Standardized 3/8-16 UNC threading assures seamless integration with a broad range of receptacle housings and manifold ports. Proper torque application—typically between 20 and 25 ft-lb—establishes optimal preload, avoiding both under-tightening and overstressing of the screw. Alignment aids, such as chamfered entry points, facilitate initial engagement and reduce cross-threading risk during assembly. Technicians often pair this fastener with Teflon tape or thread locker when preventive sealing is required. Performance testing confirms compatibility with popular graco airless paint sprayer models, supporting rapid installation during routine maintenance or part replacement cycles. Manufacturers appreciate the broad interchangeability with drive units, pump covers, and manifold adapters, ensuring minimal engineering adjustments. Field retrofits can proceed swiftly without extensive reconfiguration of supply lines.
Routine inspection protocols recommend torque validation at scheduled intervals to uphold assembly integrity in high-vibration conditions. Cleaning fasteners with mild detergents and verifying passivation layer health extends service life. Reusable characteristics allow multiple reinstallations if threads remain unmarred. For critical applications, ultrasonic cleaning combined with dry film lubricants reduces friction and prevents galling during reassembly. Documentation of torque values and cleaning cycles via digital logs enables maintenance teams to track fastener health over time. Provision of spare screws in preventative maintenance kits can prevent downtime when unplanned disassembly is required. Thread engagement depth should be checked against assembly drawings to avoid fatigue hotspots and guarantee uniform clamping force across mounting surfaces. Field engineers appreciate the ability to source exact OEM components that match original specifications, optimizing uptime for diverse sprayer machine paint systems without introducing fitment uncertainties.
Whether as part of routine service kits or emergency repairs, 17E789 SCH Cap Screw 3/8 x 2.25 SST stands out for its steadfast reliability and adherence to exacting mechanical requirements. Stocked by authorized distributors, it serves as a direct replacement item for existing equipment, eliminating the need for custom fabrication. Backed by comprehensive documentation and accessible product support, this fastener embodies Graco’s commitment to delivering precision-engineered solutions. Maintenance teams value the assurance of genuine OEM parts when managing critical fluid delivery assemblies, ensuring dependable, leak-free operation throughout project lifecycles. OEM replacement parts and technical support services further enhance operational continuity, providing peace of mind for professionals in high-pressure applications. Rigorous ISO 9001 certification underlines its quality consistency across production runs.
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