S-97345A485 10-32 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure
• Precise alignment and secure component positioning thanks to the 1/4" shoulder diameter with tight tolerance control
• High-strength performance under load with 70,000 psi tensile strength and 35,000 psi shear strength for demanding applications
• Reliable, fine-thread engagement using 10-32 UNF threads with Class 3A fit for vibration resistance and secure fastening
• Easy installation and removal with hex socket drive and knurled head for improved grip and torque application
• Long-term durability ensured by Rockwell B79 hardness, resisting wear and deformation over repeated use
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH for quality assurance and environmental safety

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical alignment and stability challenges in precision assemblies. The 10-32 UNF fine thread with Class 3A fit provides exceptional vibration resistance, making it ideal for machinery, automation systems, and electronic enclosures where loosening under dynamic loads is a concern. The knurled socket head enhances tool grip, reducing slippage during installation in confined spaces. Its 1/4" shoulder length acts as a precise spacer or pivot, eliminating the need for additional components and simplifying assembly. The corrosion-resistant 316 stainless steel material ensures longevity in moist, chemical, or marine environments, reducing maintenance frequency and downtime in industrial shoulder screw applications.

Specification Summary & Compliance

This shoulder screw features a 10-32 UNF thread with Class 3A fit for high precision, a shoulder diameter of 1/4" with tolerance of -0.004" to -0.002", and shoulder length of 13/16" with tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring both dimensional accuracy and regulatory adherence for global industrial use.