M2 M2.5 M3 Hex Socket CAP Head Screws - Brass - Allen Key Bolts Small DIN 912
Pitch: 0.4mm (M2 ) / 0.45mm (M2.5 ) / 0.5mm（M3）. Coarse Thread Hex Socket Head Cap Screws Small Allen Key Bolts Brass. Standard:DIN 912. Head Style: Socket Cap Head. Thread Length : 4mm - 30mm(Length does not include head).