Optimize your spraying system with the Graco 112586 Hexagonal Head Cap Screw, designed for seamless integration with industry-leading equipment. This precision-machined component ensures a secure seal and reliable peak performance, supporting advanced spray setups like airless sprayer devices and high-pressure filtration assemblies. Crafted from high-grade stainless steel, the hex-cap screw delivers exceptional corrosion resistance and durability under rigorous conditions associated with professional coatings applications. Ideal for workshops, maintenance facilities, and custom painting operations, it simplifies service routines and minimizes downtime. Its compact dimensions—0.6 inches in diameter and 1.35 inches in length—fit a variety of spray gun configurations, enhancing stability and preventing leaks. Whether you’re upgrading an existing system or performing routine repairs, this screw cap offers consistent, long-lasting support. Integrate it with your hvlp spray gun or hvlp paint spray gun for optimized flow control and improved spray accuracy. Ensuring optimal spray output.
The Graco 112586 Hexagonal Head Cap Screw is a precision-machined fastening solution engineered to secure high-pressure pump components within airless sprayer systems used for professional coatings. With a height of 0.6 in (1.524 cm), length of 1.35 in (3.429 cm), and hex head diameter of 0.6 in (1.524 cm), it balances compact size with exceptional mechanical robustness. Crafted from hardened AISI 410 stainless steel, it delivers superior corrosion resistance and dimensional stability under cyclical pressure loads, contributing to enhanced seal longevity and consistent pump efficiency across demanding paint spraying equipment.
Installation of the Graco 112586 cap screw requires precise torque control, typically 15–18 ft-lb (20–24 N·m), to ensure optimal sealing force without inducing material fatigue. When integrating into spray tip manifolds or fluid passages on high-pressure filtration assemblies, technicians must follow calibrated angular tightening sequences to preserve thread engagement and prevent cross-threading. This fastener is a direct replacement across multiple legacy Graco platforms, including popular sprayer lines where graco magnum x5 parts have set benchmarks for reliability and uptime.
Routine maintenance protocols often involve screw inspection and replacement during rebuild cycles in conjunction with Graco Pumps Repair Kits. By monitoring tensile yield, checking thread pitch integrity and evaluating microhardness against OEM tolerances, field technicians can mitigate micro-leakage and pressure regressions. This approach to fastener renewal enhances pump efficiency, preserves component interchangeability across frames and safeguards coating viscosity control for uniform finish quality.
The base material for the 112586 cap screw is AISI 410 stainless steel, chosen for its high tensile strength (approx. 90 ksi), yield strength of 55 ksi and excellent wear resistance in abrasive fluid media. A nitric acid passivation step augments corrosion protection against solvent-borne or waterborne formulations. The nitrided surface finish also reduces galling during installation and dismantling, sustaining thread engagement over repeated service cycles and extending seal longevity in aggressive professional coatings environments.
Manufactured to ISO 2768-m general tolerances, each cap screw undergoes magnetic particle inspection for subsurface defects and optical comparator analysis for precise thread profiling. Dimensional consistency is verified with coordinate measuring machine (CMM) checks within ±0.005 mm. Cyclic loading tests simulate up to 5,000 psi and exceed 10,000 cycles at rated torque to demonstrate fatigue resistance. Such validation ensures mechanical integrity in high-pressure filtration manifolds and precision spray pumps for consistent coating distribution.
In Graco fluid section overhauls, this hex head screw cap is specified across various kit configurations to streamline spare parts management. Bundling it with o-rings, backup rings and springs optimizes leak prevention strategies and eliminates mismatched component issues. Its interchangeability across piston and diaphragm pump styles minimizes downtime, allowing maintenance teams to rapidly restore peak pump performance in both shop and field environments.
Operators deploying Graco airless sprayer rigs for architectural or industrial coatings rely on the 112586 cap screw to stabilize fluid pressure and prevent bypass during high-demand cycles. Applying a thin coat of PTFE-based anti-seize to the thread flanks prior to installation reduces galling and maintains consistent torque readings. Scheduled torque audits paired with detailed inspections for thread deformation or micro-cracks uphold safety margins, ensure uniform atomization at the spray tip and optimize finish quality.
Field data indicate that implementing scheduled cap screw replacements can decrease unplanned maintenance incidents by over 20% while extending seal life by up to 30%. In operations with high-viscosity coatings, tight fastener tolerances directly correlate to stable flow curves and reproducible surface finish. Integrating this component within advanced pump architectures has yielded measurable gains in pump efficiency, lowering peak motor load by approximately 4% under continuous operation and enhancing overall system reliability.
The Graco 112586 Hexagonal Head Cap Screw exemplifies a high-precision fastening component vital to the performance of professional airless sprayer and high-pressure coating delivery systems. Its robust stainless steel construction, stringent manufacturing tolerances and proven field performance deliver reliable operation under extreme pressures and cyclical loads. By maintaining consistent torque specifications and integrating within established maintenance protocols, this fastener ensures long-term system integrity, exceptional seal longevity and optimal pump efficiency across a broad range of industrial coating applications.
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