https://www.darloc.com/locknuts/nm408-reduced-hex-locknuts-for-hvac-assemblies-high-temperature
NM408 Reduced Hex Locknuts for HVAC Assemblies | High-Temperature Fasteners | Darloc
NM408 Reduced Hex Locknuts optimized for hvac assemblies applications requiring high temperature performance. Bulk available for fastener distributors, OEMs,...
reduced hexfor hvachigh temperaturelocknuts