S-92944A124 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance under high loads.
• Precise alignment and smooth rotation enabled by the accurately machined shoulder with controlled diameter and length tolerances.
• Secure and efficient installation with a hex drive and standard 82° countersink, ensuring flush mounting and reduced installation time.
• Dependable thread engagement through Class 3A UNC coarse threads, providing superior fit and vibration resistance in demanding applications.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global markets.
• Consistent hardness (Rockwell B55) for excellent wear resistance and durability through repeated use.

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial assemblies. The 3/4" shoulder length and precise shoulder diameter provide a stable bearing surface, minimizing wear and maintaining component alignment in machinery, pivots, and rotating mechanisms. The 1/4"-20 UNC coarse thread and Class 3A thread fit ensure secure fastening even in high-vibration environments, reducing the risk of loosening. The hex drive flat head design allows for easy installation and a clean, flush finish. Its corrosion-resistant properties make it suitable for applications in automotive, aerospace, and food processing equipment, where durability and compliance with RoHS and REACH standards are paramount.

Specification Summary & Compliance

This shoulder screw features a 1/4"-20 UNC thread with Class 3A fit and a shoulder diameter tolerance of -0.004" to -0.002". The shoulder length is 3/4" with a tolerance of -0.005" to 0.005". It is manufactured from 18-8 Stainless Steel with a hardness of Rockwell B55, tensile strength of 70,000 psi, and minimum shear strength of 35,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.