RED HEAD SPECIFICATIONS: Aluminum Storz Adapters shall consist of Storz coupling heads machined from forged 6061-T6 aluminum and adapter components fabricated from seamless extruded 6061-T6 aluminum. All aluminum components shall be hardcoat anodized mer MIL-A-8625 Type III, Class1. Threads shall be blunt start Higbee cut with indicators on adjacent lugs. Part identification shall be permanent and stamped or forged prior to hardcoat. Swivel attachment must be stainless steel ball or 6269-T9 aluminum roller bearings, not swaged. All 4", 5", and 6" adapters shall include a stainless steel external spring-loaded lock. Storz gaskets shall be molded Buna-N rubber. Face gaskets shall be lathe cut ozone free EPDM or synthetic rubber. Adapters and components must meet the requirements of NFPA 1963.