S-90337A455 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional strength and durability offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under load
• Precise alignment and positioning ensured by the 5/16" shoulder diameter with tight tolerances for accurate component assembly
• Easy installation and removal with low profile socket head and 5/32" hex drive, providing secure tool engagement in confined spaces
• Consistent thread performance with UNC coarse thread spacing and Class 2A fit, reducing cross-threading and ensuring smooth fastening
• Compliance with environmental standards including RoHS 3 and REACH, meeting global regulatory requirements for safe usage
• Versatile right-hand thread design compatible with standard 1/4"-20 applications, simplifying inventory and replacement processes

Professional Applications & Engineering Value

This 1/4"-20 shoulder screw is engineered to address critical alignment challenges in precision assemblies, such as machinery, automotive components, and electronic enclosures. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and wear, extending service life in demanding conditions. The low profile socket head and hex drive allow for efficient installation in tight spaces, while the precisely machined shoulder with diameters like 5/16" ensures components remain accurately positioned without shifting. By incorporating UNC coarse threads and Class 2A fit, it minimizes the risk of thread damage during repeated use, making it a reliable choice for B2B applications requiring durability and exact tolerances. This screw is ideal for industries where precision alignment and corrosion resistance are paramount, reducing maintenance costs and improving assembly reliability.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNC standards, ensuring dimensional accuracy and interchangeability. The shoulder diameter is maintained at 5/16" with tight tolerances (-0.001" to 0"), and the shoulder length is 1/4" with a tolerance of 0" to 0.002" for precise fits. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use. Manufactured to deliver consistent performance, it meets common engineering specifications for strength and hardness without additional certifications.