S136H Tool Steel With Passivation Finish Precision CNC Turning Component

This precision CNC turned threaded pin assembly is engineered for high-performance automotive applications where dimensional accuracy, surface integrity, and long-term durability are paramount.

Manufactured from S136H tool steel — a premium chromium-based stainless mold steel renowned for its outstanding polishability, excellent corrosion resistance, and superior wear resistance. This material delivers exceptional mechanical performance even under demanding operating conditions.

• Integrated design with precision-threaded outer body and hardened cylindrical pin shaft
• Machined to tight concentricity tolerances in a single CNC turning setup
• Coarse external thread profile ensures secure and reliable engagement
• Precision-ground pin provides accurate positional reference and load-bearing capability
• Ideal for automotive structural or fastening applications

Following machining, each component undergoes passivation treatment to dissolve residual surface iron contamination and enhance the natural passive oxide layer inherent to S136H's high chromium content. This process further elevates corrosion resistance, ensures a clean and chemically stable surface, and prolongs service life in moisture-exposed or chemically aggressive automotive environments.

All components are manufactured under IATF 16949 and ISO 9001 certified quality systems, with comprehensive inspection protocols applied to every production lot:

• Thread gauge verification
• CMM dimensional checking
• Surface roughness measurement
• Passivation integrity validation