M4-0.7×40 Stainless Socket Allen Head Bolts M4x0.7 x 40 Screws 4mm x .7 x 40mm
Smooth Head Socket Head Cap Screws / Bolts. Hex Key / Allen Wrench Size:3mm. Thread Pitch7 (Coarse Thread). Head Height:3.82mm ~ 4mm. Thread Length:20mm. Material:Stainless Steel. It is a lot easier to resolve problems one on one.We will do our best to work out any issues there may be.