What is BS EN 4109 - Spanner face wrenches about?
BS EN 4109 is a European standard on aerospace series which covers wrenches and face spanner. BS EN 4109 specifies the characteristics of spanner face wrenches for splined nuts for aerospace applications.
Who is BS EN 4109 - Spanner face wrenches for?
BS EN 4109 on spanner face wrenches is useful for: 
- Manufacturers of aerospace equipment and components
- Spanner face wrenches manufacturers
Why should you use BS EN 4109 - Spanner face wrenches?
Adjustable face spanner wrenches are hinged and V-shaped to fit different diameter fasteners and collars. They grip the round holes on the face of collars, bearings, and other machine tool components to loosen or tighten them during removal or installation.
Spline lug nuts are designed to fit in small diameter recesses found on aftermarket wheels. These lug nuts are characterized by their smooth exterior finish and internal splines on the top of the lug that's requires a spline drive adapter for installation and removal.
When it comes to the manufacturing and use of aerospace components, reliability and consistent performance are crucial. Hence BS EN 4109 walks you through characteristics of spanner face wrenches for splined nuts. This ensures safety and reliability in your organization and in turn increases the efficiency of work.
