S-94328A941 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides superior protection against rust and wear in demanding industrial environments.
• High-Strength Construction: Made from alloy steel with a tensile strength of 140,000 psi and Rockwell C30 hardness for reliable performance under high stress.
• Precision Thread Fit: Class 3A thread fit ensures tight, secure fastening with minimal backlash in critical assemblies.
• Optimized Low-Profile Design: Low socket head and knurled texture allow for easy installation in confined spaces and improved grip during handling.
• Versatile Shoulder Functionality: The 1/2" shoulder length with precise diameter tolerances provides accurate alignment and acts as a pivot or spacer in mechanical systems.
• Broad Industrial Compliance: RoHS 3 and REACH compliant, meeting stringent environmental and safety regulations for global supply chains.
• Efficient Coarse Threading: 1/4"-20 UNC coarse thread enables quick assembly and disassembly, reducing installation time in production settings.

Professional Applications & Engineering Value

This low profile socket head shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and component wear. The alloy steel construction, combined with a black oxide finish, ensures long-term durability and resistance to corrosion in harsh conditions like automotive assemblies or industrial equipment. The Class 3A thread fit and UNC coarse thread provide a secure, vibration-resistant connection, while the 5/16" shoulder diameter with tight tolerances facilitates exact positioning in pivots, bearings, and linkages. Ideal for applications requiring high tensile strength and reliable performance, this screw minimizes maintenance needs and enhances operational efficiency in B2B settings.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 3A thread fit for precise dimensional accuracy, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for industrial use.