... Countersunk Flat Head Chip Board Screw 1.Usage: Industrial construction, architecture, foundry, furniture-making or furniture repair, interior ... .Shrank: Smooth, Grooved, Spiral, Angular, Twist4.Features: Flat caps, Round Bar, Diamond Point, Bright Surface, Strong Rust ... Variety: Common Head, Countersunk Head, Lose Head, Flat Countersunk Chequerred Head6.Finish: Polished, Electric Galvanized or ...