The spherical washer head screw is Probably the most flexible screws out there. The screw provides a washer created appropriate in. This washer improves the bearing region, escalating the power of the link. The courser the thread the quicker It will probably be to install because they push into the

Combi screws are only as the identify implies: a mix of two screw heads on a single. you'll find many different types of combi screws, all of which may be utilised with one or more motorists. the objective of a combi screw is ease. Basically, that a single screw may be used with both a Philips or ev