S-91855A520 1/4"-20 Cap Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and outdoor applications
• Reliable coarse thread engagement using UNC 1/4"-20 threading for faster assembly and reduced cross-threading risks
• Precise Class 2B thread fit ensures consistent clamping force and vibration resistance in demanding applications
• External hex drive design provides secure tool grip and high torque capability without stripping
• Standard cap profile offers finished appearance while protecting threads from damage and contamination
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in industrial and international markets
• Optimized dimensions (7/16" width, 15/32" height) for space-constrained assemblies while maintaining structural integrity

Professional Applications & Engineering Value

This 18-8 stainless steel cap nut delivers exceptional value in industrial settings where corrosion resistance and thread reliability are critical. The UNC coarse thread configuration enables rapid installation in manufacturing lines while maintaining secure fastening in high-vibration equipment. The external hex drive accommodates standard tools for consistent torque application, preventing assembly errors. Engineered with a Class 2B thread fit, this cap nut maintains precise tolerances in automotive, machinery, and structural applications where vibration resistance is essential. The stainless steel construction ensures long-term performance in chemical processing, marine environments, and food equipment where moisture and corrosive elements are present.

Specification Summary & Compliance

Manufactured to exacting standards with Class 2B thread fit precision and UNC 1/4"-20 coarse thread specifications. Dimensions include 7/16" width and 15/32" height with standard cap profile. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and international market acceptance. Right-hand thread direction with external hex drive configuration for consistent industrial performance.