S-91273A224 3/8"-24 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and long-term reliability.
• High tensile strength of 70,000 psi ensures secure fastening under heavy loads, reducing the risk of mechanical failure.
• Precision-machined shoulder with tight diameter and length tolerances provides accurate alignment and spacing in assemblies.
• Knurled hex socket head offers enhanced grip and easy installation with standard tools, minimizing slippage and assembly time.
• UNF fine thread (3/8"-24) delivers better vibration resistance and finer adjustment control compared to coarse threads.
• Class 2A thread fit ensures consistent, reliable engagement with mating parts for smooth assembly and disassembly.
• Compliance with RoHS 3 and REACH guarantees environmental safety and regulatory acceptance in global markets.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address critical alignment and spacing challenges in precision machinery. The 1" shoulder length and controlled diameter tolerances provide a stable pivot or bearing surface, reducing wear and misalignment in rotating assemblies, such as gears, pulleys, and linkages. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for applications in moist or chemically aggressive environments, including food processing, automotive, and aerospace sectors. Combined with a UNF fine thread and hex socket head, it ensures secure, vibration-resistant fastening that maintains integrity under dynamic loads, enhancing overall equipment lifespan and reducing maintenance downtime.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNF fine thread standards (3/8"-24), with precise shoulder diameter and length tolerances for consistent performance. Manufactured from 18-8 Stainless Steel with a hardness of Rockwell B55, it meets industry requirements for strength and durability. The product is fully compliant 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 industrial and commercial applications.