S-91833A104 3-48 Thumb Nuts

Key Features & Benefits at a Glance

• Enhanced grip and torque application with knurled head texture for secure hand-tightening in confined spaces
• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Precision thread engagement with Class 2B fit ensuring reliable fastening and vibration resistance
• Quick installation and adjustment through fully threaded UNC coarse spacing for rapid assembly operations
• Durable round head profile designed for repeated manual use without tools, reducing maintenance downtime
• Standardized compatibility with 3-48 UNC threaded components across industrial equipment and machinery
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global supply chain integration

Professional Applications & Engineering Value

This 18-8 stainless steel thumb nut solves critical assembly challenges in maintenance-heavy industries by combining corrosion-resistant properties with ergonomic manual operation. The fully threaded 3-48 UNC coarse design enables rapid installation on access panels, electrical enclosures, and machinery guards where tool access is limited. Engineers specify the knurled round head for vibration-prone applications—from conveyor systems to packaging equipment—where repeated adjustments require consistent thread integrity. The Class 2B thread fit maintains precise tolerances across thermal cycles, preventing loosening while supporting compliance-driven manufacturing environments.

Specification Summary & Compliance

Manufactured to UNC thread standards with Class 2B thread fit for consistent dimensional accuracy. The 1/4" collar diameter and 3/8" height maintain standardized proportions for interchangeability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring material restrictions are met for industrial and international applications.