Energetic Armament Direct Thread Adapter 5/8-24 RH A direct thread adapter engineered to convert HUB-style suppressors to a direct thread mounting system using the industry standard 1.375-24 hub interface. Purpose-built for compatibility with VOX and many other hub-compatible silencers, the adapter provides a secure, repeatable connection while preserving alignment and bore integrity. Manufactured exclusively from US origin, DFARS compliant 6AL-4V titanium for an optimal blend of strength and light weight, the adapter is finished in black Cerakote for long-lasting corrosion resistance. Spanner slots accept a VOX spanner wrench for positive tightening to the silencer. Weight 1.3 oz. Available in common barrel thread pitches to suit a range of platforms.