1000Pcs TSOS-M25-200/300/400/600/800/1000/1200/1400/1600/1800/1900 Threaded Standoffs Self Clinching Standoff for sheets thin as 0.25/ 0.63mm Server Cabinet Motherboard Spacer Insert Rivet Nuts Thin Sheet Metal Screw 300 Stainless Steel PEM Sta…