S-97042A196 5/16"-18 x 3 1/2" Partially Threaded Studs

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• Reliable thread engagement due to Class 2A thread fit, ensuring consistent assembly and reducing the risk of cross-threading.
• High tensile strength of 70,000 PSI provides dependable load-bearing capacity for demanding mechanical applications.
• Versatile partial threading design allows for secure fastening on one end while leaving a smooth shaft for alignment or adjustment.
• Right-hand coarse (UNC) threading offers quick assembly and disassembly, improving maintenance efficiency.
• Precision dimensional tolerances (±0.005" on shaft diameter) ensure consistent performance and interchangeability.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and suitability for regulated industries.

Professional Applications & Engineering Value

This 5/16"-18 UNC threaded stud is engineered to address common challenges in machinery assembly and structural fastening. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for outdoor, marine, or chemically exposed settings. Its partially threaded design is particularly valuable in applications where one end requires a secured, threaded connection—such as in motor mounts or bracket installations—while the unthreaded portion serves as a precision guide or spacer. The Class 2A thread fit and coarse thread spacing ensure rapid installation with reduced risk of stripping, which is critical in high-volume production environments. With a 70,000 PSI tensile strength, this stud maintains integrity under vibration and dynamic loads, offering long-term reliability in automotive, aerospace, and industrial equipment.

Specification Summary & Compliance

This stud adheres to UNC thread standards with a Class 2A external thread fit, providing standard manufacturing tolerances for reliable compatibility. Key dimensions include a 5/16" shaft diameter with a tolerance of -0.005" to +0.005", a 3/4" thread length, and an overall length of 3 1/2". The product 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 environmentally conscious industries.