Kratos Design Group MLOK QD Mount Black. The 4140 material boasts a tensile strength of 95000psi making it extremely durable and able to withstand years of abuse. Our QD MLOK Sling Mount is 4-position rotation limited includes MLOK hardware and is backed by Kratos Design Group lifetime warranty. The included MLOK hardware uses nitrided MLOK nuts and screws with a tensile strength of 170000psi. Strength is in our name and we apply that philosophy to every aspect of our products. The MLOK screws require a 5/32 Allen wrench (not included). The included screws have thread locker pre-applied. Kratos Design Group recommends a torque value of 30-35in/lbs for mounting on aluminum handguards. A torque value of 12-15in/lbs is recommended for Magpul polymer handguards. Specifications for Kratos Design Group MLOK QD Mount: Manufacturer: Kratos Design Group Color: Black Fabric/Material: 4140 Steel Finish: Nitride Package Contents: Kratos Design Group MLOK QD Mount Kratos Design Group QD-M-KDG: MLOK QD Mount Black