Uxcell a15123100ux0344 M3 x 40mm Phillips Head Stainless Steel Countersunk Bolts Screws Head style: flat head; material: 304 stainless steel; Package Content: 50(+/-2%) Pcs x countersunk bolts Product Name: countersunk bolts; thread size: M3 x 38mm/0.12" x 1.5"(D*l); weight: 87G Drive Type: Philips; main Color: Silver tone; thread Pitch: 0.5mm/0.02" Total length: 40mm/1.6"(L); head diameter): 5mm/0.2"; head height(k): 2mm/0.08" Thread diameter): M3/3mm; Philips size: 3mm/0.12"