M4x40mm 0.7mm Pitch Bolts Socket Cap Head Hex Key Screws 20pcs Product Name : Hex Socket Cap Screw;Material : 304 Stainless Steel;Color : Silver Tone Screw Type : M4x 40mm;Thread Diameter : 4mm/ 0.15";Thread Length : 40mm/ 1.6" Thread Pitch : 0.7mm;Hex Width : 3mm/ 0.12" Head Size : 6.8 x 4mm/ 0.27" x 0.16" (D*H);Overall Size : 44 x 6.8mm/ 1.7" x 0.27"(L*D) Weight : 78g;Package Content : 20 x Hex Socket Cap Screws