The Graco 17W987 Screw, 5/16-18 X 3/4", Flat Head offers exceptional strength and durability in demanding industrial environments. Engineered for use in airless sprayer assemblies and professional coatings machines, it provides a flush fit and precise torque control. Crafted from premium alloy steel, this fastener resists wear and corrosion even under continuous operation. Its flat head profile ensures seamless integration into equipment housings, while the coarse 18-thread design guarantees stable component retention. The low-profile head reduces interference in tight cabinet spaces, enabling streamlined assembly workflows and simplified maintenance. Technicians appreciate the standardized thread pitch that minimizes tool slippage and cross-threading during installation. Whether replacing worn components or installing new high-pressure filtration manifolds, this screw maintains optimal sealing and mechanical integrity under pressures exceeding 3000 PSI. Compatible with a wide range of Graco models and aftermarket filtration modules, it upholds industry standards for material composition and dimensional accuracy.
Graco 17W987 Screw, 5/16-18 X 3/4", Flat Head offers a robust fastening solution tailored for professional paint spray equipment. Crafted from high-alloy, heat-treated steel, it delivers superior shear strength and resistance to deformation. Flat head geometry provides a smooth, low-profile finish that integrates seamlessly into panel surfaces. Ideal for both routine maintenance and complete system builds, this fastener ensures repeatable performance under elevated pressures and frequent assembly cycles, reducing downtime and reinforcing structural integrity.
Composition of the alloy steel meets stringent Rockwell hardness specifications, preventing thread stripping during high-torque installations. Uniform grain structure minimizes micro-cracks, enhancing fatigue life even under cyclic loading conditions. Finely tuned heat treatment processes create a balanced microstructure, marrying toughness with hardness to withstand mechanical stress and abrasive contaminants commonly found in spray environments.
Head profile adheres to a 90° countersink angle with chamfered edges, ensuring even seating in drilled recesses. Flat head diameter is optimized to distribute clamping force across a wider surface, reducing risk of panel deformation. Specialized black-oxide or zinc plating further protects against solvent exposure and moisture ingress, maintaining aesthetic uniformity and preventing electrodeposition from corrosive agents.
Before fastening, verify that mating holes are deburred and free of residue. Application of a compatible anti-seize lubricant can dramatically improve long-term serviceability, particularly in corrosive environments. Align the screw squarely in the countersunk seat, then apply a calibrated torque wrench set to manufacturer recommendations—typically between 6 and 8 ft-lb for this size—to achieve optimal preload without overstressing the material. Periodic torque audits help detect loosening and prevent leaks in fluid passages.
Integration with a variety of spray modules ensures this screw is an indispensable part of maintenance kits. Correlation charts often cross-reference serial numbers against fastener specifications, allowing technicians to validate fitment during an overhaul. Referencing a graco x7 airless paint sprayer parts list can streamline ordering of complementary hardware and gaskets for complete assembly.
Service manuals include detailed exploded-view schematics; accessing an up-to-date graco 395 parts diagram assists in locating each fastener within manifold assemblies and control panels. Revision histories and torque tables are available through online portals, ensuring that installers apply the most current specifications. Downloadable PDF guides often cover thread engagement depths and backing washer recommendations for enhanced seal integrity.
Each batch undergoes nondestructive testing—such as magnetic particle inspection—to detect subsurface flaws. Certification documents accompany shipments, confirming compliance with ISO 9001 quality management systems. Lot traceability enables precise identification of manufacturing conditions, offering accountability and rapid resolution in the event of irregularities. This traceable approach reinforces consistency across production runs.
On-site evaluations report this fastener sustaining more than 2,500 installation cycles without thread degradation, even in high-volume spray booths. Laboratory testing simulates exposure to lacquer solvents, epoxies, and cleaning detergents, revealing negligible corrosion or surface pitting. Vibration analysis indicates negligible loosening over dynamic runs, underscoring reliability in both stationary and robotic spray configurations.
Authorized distributors stock this part number alongside complementary hardware to support scheduled maintenance or emergency repairs. Cross-reference guides simplify ordering by mapping alternate catalog numbers. Packaging in sealed cartons preserves corrosion-resistant coatings until point-of-use. For streamlined procurement, service centers provide part kits that include fasteners, seals, and installation tools, minimizing assembly errors and maximizing operational uptime. Consultation of a graco 395 paint sprayer service bulletin will reveal related maintenance intervals and recommended spares.
Graco 17W987 Screw, 5/16-18 X 3/4", Flat Head exemplifies precision engineering for demanding spray applications. Its combination of high-strength alloy material, exacting thread tolerances, and corrosion-resistant finishes makes it a cornerstone in maintaining performance and safety standards. For genuine replacement parts or technical support, contact authorized service centers to ensure adherence to quality benchmarks and maintain uninterrupted system performance.
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