12 mm Rack Screws and Cage Nuts, 50 Pack, Black, Replacement Serve Rack Screws (CABSCREWM5B), Skruer og møtrikker for rack, sort, for P/N: RACK-18U-20-WALL-OA, RACK-21U-20-WALL-OA, RACK-24U-20-WALL-OA, RK12OD2, RK3236BKF