S-97042A183 1/4"-28 x 3" Partially Threaded Studs

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Reliable high-strength performance with a 70,000 psi tensile strength, ensuring secure fastening under significant load and stress.
• Precise and consistent fit due to the Class 2A thread fit and fine UNF threading, reducing the risk of cross-threading and assembly errors.
• Optimized for specific assembly needs with partial threading (3/4" length) on one end, providing a firm grip in components and easy adjustment.
• Superior dimensional accuracy with a shaft diameter tolerance of ±0.005", guaranteeing uniform performance and interchangeability.
• Compliance with stringent environmental standards including RoHS 3 and REACH, ensuring safety and regulatory acceptance for global markets.
• Right-hand thread direction for standard, intuitive installation and removal, streamlining maintenance and repair processes.

Professional Applications & Engineering Value

This 1/4"-28 UNF partially threaded stud is engineered to address critical challenges in machinery assembly, automotive systems, and precision equipment where vibration resistance and material integrity are paramount. The 18-8 stainless steel offers excellent resistance to oxidation and chemical exposure, preventing failure in corrosive settings. Its Class 2A thread fit and fine UNF thread provide a secure, tight connection that minimizes loosening under dynamic loads, making it ideal for applications requiring repeated disassembly. The 3/4" thread length on one end allows for deep engagement in tapped holes while leaving a smooth shank for component alignment, enhancing structural stability and reducing stress concentration in high-strength industrial frameworks.

Specification Summary & Compliance

This stud adheres to UNF fine thread standards with a Class 2A thread fit for consistent, precise external threading. The shaft diameter is maintained within a tight tolerance of -0.005" to 0.005" to ensure dimensional accuracy. Manufactured from 18-8 stainless steel, it meets a tensile strength of 70,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for hazardous substances.