S-99022A112 3/8"-16 Cap Nuts

Key Features & Benefits at a Glance

• Corrosion-resistant performance with 18-8 stainless steel construction for extended service life in harsh environments
• Space-saving low profile design (1/2" height) ideal for applications with limited clearance
• Secure Class 2B thread fit ensures reliable engagement and vibration resistance in assembled components
• Easy installation and removal with standard 5/8" external hex drive compatible with common tools
• Durable UNC coarse threading (3/8"-16) provides superior resistance to cross-threading and damage
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial use
• Right-hand thread orientation delivers consistent, predictable fastening in standard assembly operations

Professional Applications & Engineering Value

This low profile cap nut delivers critical engineering advantages where space constraints challenge conventional fasteners. The 18-8 stainless steel composition provides exceptional corrosion resistance, making it suitable for manufacturing equipment, marine hardware, and food processing machinery where moisture exposure is common. The external hex drive enables high-torque installation without compromising the finished appearance, while the UNC coarse threads ensure rapid assembly and disassembly in maintenance-intensive environments. With its compact 1/2" height profile, this nut solves clearance issues in tight-tolerance assemblies without sacrificing strength or thread engagement depth. The combination of Class 2B thread fit and right-hand threading provides reliable performance in vibrating applications across automotive, industrial machinery, and structural frameworks.

Specification Summary & Compliance

This precision cap nut features 3/8"-16 UNC coarse threads with Class 2B thread fit tolerances per ASME standards, ensuring consistent dimensional accuracy. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety. Critical dimensions include 5/8" width across flats and 1/2" total height with 5/16" thread depth, maintaining strict adherence to industrial fastener specifications for reliable performance in demanding applications.