S-97345A454 10-24 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 outdoor applications.
• High tensile and shear strength (70,000 psi tensile, 35,000 psi shear) ensures reliable performance under heavy loads and mechanical stress.
• Precise Class 3A thread fit and tight shoulder tolerances (±0.005") provide secure, vibration-resistant assemblies with minimal play.
• Knurled socket head with hex drive allows for easy installation and removal, even in tight spaces or with gloved hands.
• Long 6-inch shoulder offers stable alignment and spacing for rotating components like gears, pulleys, and bearings.
• Compliance with ASME B18.3 and environmental standards (RoHS 3, REACH) ensures quality, safety, and regulatory acceptance.
• Coarse UNC threading enables quick assembly and disassembly, reducing labor time in maintenance and production lines.

Professional Applications & Engineering Value

This 10-24 UNC shoulder screw in 316 stainless steel addresses critical engineering needs in machinery, automation, and marine systems where corrosion resistance and precision alignment are paramount. The 6-inch shoulder with minimal tolerance variation acts as a sturdy axle or pivot, preventing misalignment in rotating assemblies like conveyor rollers or linkage mechanisms. Its Class 3A thread fit and Rockwell B79 hardness ensure threads engage securely without stripping, even under repetitive stress. The knurled socket head enhances grip for torque application, making it suitable for high-vibration environments in automotive or aerospace fixtures. By meeting ASME B18.3 specifications, it guarantees interchangeability and reliability, reducing downtime in industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit per UNC standards, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of ±0.005". It conforms to ASME B18.3 for dimensional consistency and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it is free from hazardous substances. The manufacturing process emphasizes precision for reliable performance in regulated industries.