uxcell M3x8mmx0.5mm Button Head Hexagon Socket Key Bolts Screws 100 Pcs Product Name : Button Head Screws;Material : 304 Stainless Steel;Color : Silver Tone Head Type : Button Head;Screw Type : M3x 8mm;Thread Diameter (d) : 3mm/ 1/8" Thread Length (L) : 8mm/ 5/16";Thread Pitch : 0.5mm;Hex Key Width (S) : 2mm/ 0.08" Head Size (dk xk) : 5.5 x 1.7mm/ 0.22" x 0.07" (D*H);Overall Size : 9.5 x 5.5mm/ 0.37" x 0.22"(L*D) Weight : 54g;Package Content : 100 (+/-2%) x Button Head Screws