S-91829A307 1/4"-20 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel material and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress
• Precise component alignment enabled by the accurately machined shoulder with tight diameter and length tolerances
• Easy installation and removal with standard socket head design providing secure tool engagement
• Wide compatibility with UNC coarse threading and Class 2A fit ensuring smooth assembly with standard components
• Regulatory compliance meeting RoHS 3 and REACH standards for safe use in global markets
• Durable right-hand thread design maintaining secure fastening in dynamic applications

Professional Applications & Engineering Value

This precision shoulder screw delivers critical engineering value in applications requiring exact component positioning and rotational control. The 18-8 stainless steel construction combined with passivated finish provides excellent protection against corrosion in manufacturing environments, while the precise shoulder fit with 3/8" diameter and 5/16" length tolerances ensures accurate alignment in assemblies. The UNC coarse threading with Class 2A fit facilitates quick installation while maintaining vibration resistance. These shoulder screws are particularly valuable in machinery, automation systems, and precision equipment where dimensional stability and corrosion resistance are paramount for long-term reliability and reduced maintenance requirements.

Specification Summary & Compliance

This 1/4"-20 UNC shoulder screw features Class 2A thread fit per standard inch system requirements, ensuring proper clearance for assembly. The shoulder maintains precise dimensional control with diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002". Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance for industrial applications worldwide. The combination of material specifications, dimensional accuracy, and regulatory adherence makes this component suitable for demanding technical applications requiring certified components.