S-97345A321 6-32 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and extended service life
• Enhanced assembly grip and torque transmission thanks to the knurled hex socket head, reducing tool slippage during installation
• High mechanical strength and reliability with 70,000 psi tensile strength and 35,000 psi shear strength, suitable for demanding applications
• Precise thread engagement and consistent fit ensured by the 6-32 UNC coarse thread with Class 3A fit, reducing the risk of cross-threading
• Accurate component alignment and spacing provided by the precisely machined shoulder with tight diameter and length tolerances
• Broad regulatory compliance meeting RoHS 3 and REACH standards, ensuring environmental safety and global market acceptance
• Optimized for high-torque applications with a standard hex socket drive and right-hand thread for efficient, secure fastening

Professional Applications & Engineering Value

This 316 Stainless Steel shoulder screw is engineered to address critical challenges in precision assembly and machinery. The UNC coarse thread and Class 3A fit provide reliable, vibration-resistant fastening in equipment subject to dynamic loads, while the knurled hex socket head ensures maximum torque application without stripping. The shoulder diameter and length are manufactured to tight tolerances, enabling exact component positioning in rotating assemblies, pivots, and linkages. Its high tensile and shear strength makes it suitable for automotive, aerospace, and industrial automation applications, where failure is not an option. The corrosion-resistant 316 Stainless Steel material further extends service life in humid or chemically aggressive settings, reducing maintenance frequency and total cost of ownership.

Specification Summary & Compliance

This shoulder screw adheres to inch system dimensions with a 6-32 UNC coarse thread and Class 3A thread fit for precision engagement. The shoulder features a diameter of 3/16" with a tolerance of -0.004" to -0.002" and a length of 3/16" with a tolerance of -0.005" to 0.005". Manufactured from 316 Stainless Steel with a hardness of Rockwell B79, it meets mechanical performance standards including 70,000 psi tensile strength and 35,000 psi minimum shear strength. 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 global industrial use.