These are bi-material screws with a butterfly head with large fins. This screw is therefore composed of a butterfly head in black nylon and a fully threaded zinc-plated steel screw. These are the BPF 50 and BPF 55 models with head diameters of 52 and 68 mm respectively.
Thanks to their large wings, this wing screw has a very good grip and handling is therefore simple.
The possibility of assembling the screw and the nut of the same model. Indeed, the corresponding wing nuts are in our range of plastometallic nuts, allowing you to create your sets.
This screw allows a good grip because of its large fins. It can be used in all industry but especially in assemblies which must be tightened and loosened regularly.