S-92944A119 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• Superior load-bearing capacity from 70,000 psi tensile strength and 35,000 psi shear strength, ensuring reliable performance in high-stress assemblies.
• Precise alignment and spacing enabled by the 5/16" shoulder diameter and standard shoulder fit, minimizing component misalignment.
• Easy installation and removal with a 3/16" hex drive and flat head design, allowing for efficient assembly with standard tools.
• Secure, vibration-resistant fastening due to the Class 3A thread fit and coarse UNC thread, providing a tight, durable connection.
• Consistent hardness and durability with Rockwell B55 rating, offering long-term wear resistance and thread integrity.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in global markets.

Professional Applications & Engineering Value

This 1/4"-20 UNC shoulder screw is engineered to address common challenges in precision machinery, such as component misalignment and vibration-induced loosening. The 18-8 Stainless Steel material provides excellent corrosion resistance, making it suitable for applications in industrial equipment, automotive assemblies, and electronic enclosures exposed to moisture or chemicals. The Class 3A thread fit and coarse thread spacing ensure a secure hold, reducing the risk of failure in dynamic loads. With a flat head and hex drive, it allows for flush mounting and easy torque application, streamlining installation in confined spaces. This screw’s high tensile and shear strength supports heavy-duty use, while the 82° countersink angle enhances stability in mating components, delivering reliable performance in precision engineering projects.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A fit for precise thread engagement and tolerance. Dimensions include a thread size of 1/4"-20, shoulder diameter of 5/16" (tolerance: -0.004" to -0.002"), and shoulder length of 1/4" (tolerance: -0.005" to 0.005"). It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances for safe industrial use.