M1.6x4mm 0.35mm Pitch Hex Key Socket Head Cap Screw Bolts 100pcs Product Name : Hex Socket Cap Screw;Material : 304 Stainless Steel;Color : Silver Tone Screw Type : M1.6 x 4mm;Thread Diameter : 1.6mm/ 0.063";Thread Length : 4mm/ 0.16" Thread Pitch : 0.35mm;Hex Width : 1.5mm/ 0.06" Head Size : 2.6 x 1.4mm/ 0.1" x 0.055" (D*H);Overall Length : 5.4mm/ 0.21" Weight : 13g;Package Content : 100(+/-2%) x Hex Socket Cap Screws