Matchmaster 08MM-FN Coaxial Connector, Nut 'F' Type With Washer (100 Pack), Suitable for use with 18MM-F813G adaptor and DA-A5FNH 'F' female adaptors, Used for a 3/8" UNEF thread, Silver

Features:
• Suitable for 18MM-F813G adaptor
• Used for a 3/8" UNEF thread