M6 X 20 FLANGE BUTTON HEAD SOCKET CAP SCREW ZINC PLATED ISO7380-2 10.9 BAG 50
M6 X 20 BUTTON HEAD SOCKET CAP SCREW WITH FLANGE. M6 is the thread size. 20mm is the thread length under the flange. ZINC PLATED ISO7380-2 10.9. Hex key/Allen key size 4mm. ITEM IN PHOTO IS ITEM SUPPLIED.