| Screws and Bolts | Thread Systems | Head Types | Quality | Coatings |
|---|---|---|---|---|
| Self-tapping & Drilling Wood screws Lag screws High-strength bolts Inviolable screws Estructural screws Expansion bolts |
Metric normal pitch thread Metric fine pitch thread British standard Whitworth British fine whitworth American SAE thread UNC thread |
Hex head Head Allen head countersunk Cap head Torx head Pan head Flat head Oval head Round head Slot head Phillips Raised cheese head Hammer head Square head RC head |
4.6 5.6 5.8 6.8 8.8 10.9 12.9 |
Zinc yellow(Y.Z.P) Zinc plated(zinc/clear) Zinc plated black Zinc plated grenn Nickel plates Deltatone JS500 Dacromet Hot dip galvanized |
