S-91273A274 3/4"-10 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• Precise component alignment ensured by the 1-1/2" shoulder with tight tolerances, reducing assembly errors and improving machinery performance.
• High-strength fastening with 70,000 psi tensile strength and 35,000 psi shear strength, providing reliable load-bearing capacity for demanding applications.
• Secure, non-slip installation via the knurled hex socket head and 3/8" drive, allowing for high torque application without tool slippage.
• Easy assembly and disassembly with coarse 3/4"-10 UNC threads and Class 2A fit, speeding up maintenance and reducing labor time.
• Enhanced durability from Rockwell B55 hardness, resisting wear and deformation under repeated use.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries and global markets.

Professional Applications & Engineering Value

This 18-8 stainless steel shoulder screw is engineered to address critical alignment and durability challenges in industrial settings. The precision shoulder with a diameter of 3/4" and length of 1-1/2" provides a stable pivot or bearing surface, minimizing misalignment in machinery like conveyor systems, robotic arms, and fixturing equipment. The coarse UNC thread and Class 2A fit facilitate quick installation while maintaining secure fastening, reducing downtime. Made from corrosion-resistant stainless steel, it withstands exposure to moisture and chemicals, extending component life in manufacturing and automation applications. The knurled hex socket head ensures firm tool grip, preventing damage during high-torque assembly and supporting efficient maintenance cycles.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent engagement and ease of assembly. The shoulder features precise tolerances: diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005", ensuring accurate alignment. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for global industrial use.