GB
| Inch | mm(L) | mm(b) |
| 4" | 100 | 7.8 |
| 6" | 150 | 10.8 |
| 8" | 200 | 12.2 |
| 10" | 250 | 15.2 |
| 12" | 300 | 18.2 |
| 14" | 350 | 21.0 |
| 16" | 400 | 25.0 |
DIN
| Inch | mm(L) | mm(b) |
| 4" | 100 | 7.8 |
| 6" | 150 | 10.8 |
| 8" | 200 | 14.8 |
| 10" | 250 | 17.3 |
| 12" | 300 | 19.8 |
| 14" | 350 | 23.8 |
| 16" | 400 | 39.2 |
Three Square File is a metal cutting and grinding hand tool, made of carbon tool steel T12 (1095, Cr06, 130Cr2) with a carbon content of 1.15%-1.25%, product hardness HRC60-65, suitable for metal and hard non-metal Cutting and grinding of articles. It is produced in accordance with GB 5803-5815, GB/T 806, American standard GGG-F-325b, and European standard DIN6261-7285. The products are produced through processes such as hot forging, grinding, tooth cutting, quenching, and surface sandblasting.
Usage and Maintenance
The file needs to be equipped with a handle when in use, and the tension between the handle and the file is above 20KG, and the operator needs to wear goggles and safety gloves when using the file. During file processing, both hands press the file on the workpiece horizontally and forward. The file cannot be processed in the reverse direction and cannot be used to process super-hard materials. After the file is used, it is necessary to clean the surface of the iron and store it safely in a dry tool bag.
Square Files
Hand Files
Flat Files
Chainsaw Files
