Centre drills for centre holes with protecting chamfer. Type B1 Scope This International Standard specifies the dimensions of centre drills for centre holes with protecting chamfer Type B. It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drills. The flutes can be straight or spiral at the option of manufacturer. Unless otherwise stated, these drills are right hand cutting. Annex A gives the recommended dimensions for the centre holes, Type B, which can

This standard is not applicable to:

BS EN 62074-1:2014 includes some technical changes with respect to BS EN 62074-1:2009

The method is applicable to the testing of commercial or experimental preservatives applied to non-durable timbers by methods appropriate to commercial practice and subsequently coated with a specified coating system

fresh concrete to hardened concrete and steel-to-steel

1   Domaine d'application

Personal safety equipment manufacturers

Diaphragm meters are displacement meters where the flow channels are designed to guarantee optimum flow conditions and a low-pressure loss

For the fundamental rules of creation and application of graphical symbols in diagrams

and test methods for laminate floor coverings

The most basic levels of security can deter criminals

Dealers and importers of crimping tools

BS G 246 specifies the design