The carriage bolts are made for woodworking These are perfect for fixing metal to wood TMco Hex Serrated Flange Nut, BZP, Znc Plated, M6, M8, M10. M12, M16... The nuts have a matching course thread and a hexagon shape that allows it to be easily tightened using the right spanner or impact wrench. These carriage bolts and hex nuts are available in a large range of different sizes and pack amounts. BZP Nuts & Bolts for Flanges - M16 x 75mm - 26509 TIMco 0675CB Carriage Bolt and Hex Nut BZP 6.0 x 75mm Box of 100 on OnBuy Features: These have a bright zinc plated finish Comes in a large range of pack amounts These have a bright zinc plated finish M8 X 75mm Carriage Bolts M8 X 75mm 8.8 H.T Hexagon Head Set Screws DIN 933 BZP Carriage Bolts And Nuts Supplied in a pack of 4