Crafted for durability, the Graco 115522 Pan Head Machined Screw delivers precision fastening for industrial spray applications. Made from high-grade stainless steel and CNC-machined to tight tolerances, it ensures reliable assembly in demanding environments. The design supports superior performance in airless sprayer setups where component integrity is crucial.
Compatible with high-pressure filtration systems and spray modules, this screw mates seamlessly with valves, manifolds, and fluid regulators to maintain consistent throughput. Its pan head profile simplifies installation and torque control, minimizing risk of loosening under load. Engineered to complement professional coatings equipment, it extends the service life of pumps and spray guns.
$6.3In fluid delivery assemblies that demand exact tolerances and reliable fastening solutions, the Graco 115522 Machined Pan Head Screw delivers uncompromised performance. Engineered for integration within high-pressure pump modules of airless sprayer units, this screw ensures optimal clamping force while maintaining alignment under cyclical loading. Its compact geometry—0.3 inch height and 0.1 inch length—minimizes intrusion into confined pump chambers, accommodating seal seats and filter housings with precision. The pan head profile provides a low-install footprint ideal for flush mounting against pump blocks and manifolds, reducing stress concentrations in aluminum and stainless steel components. This robust fastener supports professional coatings and complex metering systems without sacrificing structural integrity.
Crafted from 18-8 stainless steel using CNC machining centers, the 115522 Pan Head Screw exhibits tight tolerances with diametric variation below 0.005 mm. A critical design feature is the bend relief notch incorporated beneath the head to prevent stress risers during torqueing, thereby extending component lifespan in dynamic fluid circuits. The smooth transitional geometry supports consistent seal loading and facilitates clean breakaway under maintenance operations. In applications involving high-pressure filtration cartridges, this screw maintains seating integrity even under repeated assembly cycles and extreme pressure differentials, making it a cornerstone for durable pump modules and filter head assemblies subjected to aggressive industrial coatings and chemical agents.
During assembly, engineers rely on precise torque specification guidelines to achieve proper clamp load without overstressing the screw shank or mating threads. The Graco 115522 screw threads engage smoothly with pump housing inserts, producing predictable preload values that align with equipment warranty parameters. Its pan head countersinks evenly into recessed bores, minimizing eccentric load paths that could impair seal longevity. Thread flank angles are optimized for uniform contact stress distribution, enhancing fatigue resistance. When integrated within dosing reciprocators or piston pump assemblies, this screw enables repeatable maintenance cycles, reducing downtime and maintaining pump efficiency over thousands of operation hours under varying pressures and temperatures.
In accelerated life tests simulating 500-bar operating pressures, the 115522 Pan Head Screw demonstrated less than 0.02 mm of axial relaxation after 100,000 cycle reversals. Its pan head clamping mechanism maintains stable preload, contributing to consistent volumetric output in dosing pumps critical for professional coatings application. The head-to-shank transition zone has been stress-relieved to prevent micro-cracking under repeated torque cycles, ensuring long-term seal longevity. Combined with high-pressure filtration systems, this screw resists galvanic corrosion in multi-metal stacks. Surface micropatterning at the base of the head promotes lubricant retention during assembly, reducing thread galling and improving overall pump efficiency in demanding industrial environments.
Post-machining processes ensure the screw’s surface finish meets Ra 0.8 μm or better to reduce microscale friction during installation and operation. Precision bead blasting removes burrs while enhancing micro-adhesion points for lubricants and anti-seize compounds. An optional passivation treatment further boosts corrosion resistance in saline or solvent-rich environments often encountered in coating lines. Tight control of head flatness (±0.05 mm) and shaft concentricity (≤ 0.02 mm) prevents misalignment of sealing components, which is crucial for maintaining pressure integrity. These finish criteria contribute to predictable torque-tension relationships and extend the time between maintenance intervals in continuous production settings.
In formulations where solvent-based or waterborne chemistries are pumped, the Graco 115522 screw exhibits compatibility with various professional coatings and cleaning agents. Its 18-8 stainless grade resists pitting from phosphate or acrylic coatings, ensuring long-term stability in corrosive atmospheres. Tensile strength exceeds 82 ksi, and Vickers hardness measures around 180 HV, delivering sufficient rigidity to prevent shear failure under high torque values. The head’s large bearing surface distributes clamping loads evenly, minimizing wear on polymer seals and O-rings. By maintaining consistent joint compression, this fastener directly impacts seal longevity and reduces bypass leakage in high-pressure fluid delivery systems.
Engineered to operate from −40 °C to +200 °C, the 115522 screw retains core strength throughout thermal cycling in spray pumps and fluid heaters. Its accurate thread pitch minimizes backlash in servo-driven metering systems, while pan head geometry distributes clamping loads across composite and metal substrates. Matching torque-tension characteristics to Graco pump calibration charts ensures repeatable performance and minimal micro-leakage, solidifying its role in advanced coating, sealing, and filtration assemblies.
Subscribe to our newsletter to get exclusive discounts and new theme launches right in your inbox.
You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.
