S-90324A056 8-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable load-bearing applications
• Precise thread engagement with Class 3A fit and UNC coarse threading for secure fastening in left-hand thread assemblies
• Easy installation and removal featuring a knurled socket head with hex drive for non-slip tool grip
• Accurate component alignment provided by the 3/16" shoulder diameter with tight tolerances for consistent positioning
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries
• Enhanced durability with Rockwell B55 hardness for long-term performance in high-stress applications

Professional Applications & Engineering Value

This left-hand thread shoulder screw is engineered to address critical alignment and reverse-thread requirements in precision machinery, automation systems, and rotating equipment. The 18-8 stainless steel material provides excellent corrosion resistance, reducing maintenance in humid or chemical-exposed environments. With its 3/16" shoulder diameter and precise tolerances, it ensures accurate component spacing and rotational stability, preventing misalignment in assemblies. The UNC coarse threading and Class 3A fit deliver secure fastening in left-hand applications, while the knurled socket head allows for efficient installation with standard hex tools. Ideal for use in conveyor systems, medical devices, and aerospace components, this screw combines high tensile strength with reliable performance in demanding industrial shoulder screw applications.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with Class 3A thread fit for precise engagement. Dimensions include a shoulder diameter of 3/16" (tolerance: -0.004" to -0.002") and shoulder length of 1/4" (tolerance: -0.005" to 0.005"). It is manufactured from 18-8 stainless steel with a hardness of Rockwell B55 and tensile strength of 70,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial markets.