S-94496A500 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior load-bearing capacity with 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance in demanding applications
• Enhanced corrosion resistance through zinc plating, extending service life in industrial environments
• Precise component alignment with 3/8" shoulder diameter providing stable bearing surfaces for machinery and assemblies
• Quick installation and removal with external hex drive design allowing for standard wrench access and efficient maintenance
• Consistent thread engagement through Class 2A thread fit and UNC coarse threads ensuring reliable fastening in various materials
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
• Optimized dimensional stability with tight shoulder tolerances (±0.005" length, -0.004" diameter) for precision assembly requirements

Professional Applications & Engineering Value

This steel shoulder screw delivers exceptional engineering value in precision mechanical systems where alignment and rotational control are critical. The 1/4"-20 UNC coarse thread configuration provides excellent holding power in various materials while the 3/4" thread length ensures sufficient engagement depth. The zinc plating offers substantial corrosion protection in industrial environments, extending component lifespan. The precisely machined shoulder diameter of 3/8" serves as a reliable pivot point or locating feature in machinery, conveyor systems, and automated equipment. The external hex drive facilitates quick installation and maintenance access, reducing downtime in production environments. These shoulder screws are particularly valuable in applications requiring precise component spacing, rotational bearing surfaces, or alignment features where standard fasteners cannot provide the necessary dimensional accuracy.

Specification Summary & Compliance

This precision shoulder screw maintains Class 2A thread fit per UNC standards with a thread size of 1/4"-20. The shoulder features tight dimensional tolerances with diameter maintained at -0.004" to 0" and length controlled within -0.005" to 0.005". Manufactured from steel with Rockwell B80 hardness, the fastener delivers 70,000 psi tensile strength. The product is fully RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel and REACH (EC 1907/2006) compliant per the latest substance regulations, ensuring environmental responsibility and regulatory acceptance for industrial applications.