S-93712A900 1/2"-20 x 4" Partially Threaded Studs with Cotter Pin

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life
• Precise and reliable thread engagement thanks to Class 2A thread fit, ensuring consistent performance and reducing assembly issues
• Enhanced component security with the included 4" hairpin cotter pin, preventing loosening under vibration and dynamic loads
• Optimized for fine-thread applications with 1/2"-20 UNF threading, providing higher tensile strength and better adjustment precision
• Durable and wear-resistant material with a Rockwell B89 hardness, maintaining integrity under mechanical stress
• Simplified installation and maintenance with a partially threaded design and right-hand thread direction for standard tool use
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets

Professional Applications & Engineering Value

This partially threaded stud with cotter pin is engineered to solve critical fastening challenges in demanding industrial applications. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for machinery, automotive assemblies, and outdoor equipment exposed to moisture or chemicals. The 1/2"-20 UNF fine thread and Class 2A thread fit deliver superior clamping force and vibration resistance, preventing joint failure in high-stress environments. Combined with the hairpin cotter pin, this assembly offers a secure locking mechanism that is essential for pivot points, linkages, and other dynamic systems where safety and reliability are paramount. Its design ensures quick assembly and disassembly, reducing downtime and maintenance costs.

Specification Summary & Compliance

This product features a 1/2" shaft diameter with a tight tolerance of -0.005" to 0.005", 1/2"-20 UNF fine threading with a Class 2A external thread fit per UNF standards, and a Rockwell B89 hardness. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated industries.