What is BS EN 754-5- Tolerances on dimensions for aluminium rectangular bars about?  
BS EN 754-5 is a European Standard that covers tolerances on dimensions for rectangular bars, ensuring structural integrity and strength in industrial applications.
BS EN 754-5 is the fifth part of the standard that consists of the form and dimensions of rectangular bars, and tolerances.
BS EN 754-5 specifies the tolerances on dimensions and form for aluminium and aluminium alloy cold drawn rectangular bars having thicknesses in the range from 2 mm up to and including 60 mm and widths in the range from 5 mm up to and including 200 mm.
The temper designations used in BS EN 754-5 are according to EN 515.
Who is BS EN 754-5- Tolerances on dimensions for aluminium rectangular bars for? 
BS EN 754-5 on tolerances on dimensions for aluminium rectangular bars is useful for: 
- Manufacturers of aluminium rectangular bars
- Quality assurance services
- Bar tubes, and rod manufacturers
- Structural engineers
- Testing laboratories
Why should you use BS EN 754-5 - Tolerances on dimensions for aluminium rectangular bars?  
Aluminium rectangular bars are square-edged flat pieces of metal. Aluminium rectangular bars are used in shop fittings, welding fabrication, signage, transport, building and construction.
BS EN 754-5 is a standard set by the technical committee for the manufacturers of bars, tubes, etc. of different shapes to manufacture the products with specifications of rectangular bars, tolerances on dimensions and form.
BS EN 754-5 provides users guidance on tolerances on dimensions, including thickness and width, corner radii, length and squareness of cut ends to ensure compatibility with existing systems and installations.
BS EN 754-5 also provides users guidance on tolerances on forms, including straightness, convexity, concavity, twist and squareness, ensuring design accuracy and prevention of errors.
With obedience and compliance to BS EN 754-5, users can assess and develop aluminium and aluminium alloy rectangular bars, ensuring their strength, resilience and durability in industrial applications.
What’s changed since the last update?
BS EN 754-5:2008 supersedes BS EN 754-5:1995. BS EN 754-5:2008 includes some technical changes with respect to BS EN 754-5:1995. These include: 
- Clause 2: Alloy EN AW-6262A and EN AW 6065 are added in Group I 
- Clause 2: Alloy EN AW-5049 is added in Group II
