Specifications for tab washers for B.A. and B.S.W. hexagons for aircraft1 Scope These British Standards specify the materials, dimensions and protective finish of carbon steel and corrosion resisting steel straight, right angle and left angle tab washers for B. A. and B. S. W. hexagons for aircraft. A recommended method of application when washers are fitted into drilled holes is shown in the Appendix. NOTE For tab washers for use with Unified hexagons see BS SP 107 112 Tab washers for use with Unified hexagons for

This part of BS 903 provides a general introduction to BS 903 and to BS ISO standards

The changes compared to the previous edition are as follows

The guidelines in BS EN 3475-405

This will ensure smoke control dampers perform appropriately preventing any injury to people

As a step to the full utilization of basic SI units

4 General requirements and general requirements for test

liquid or solid fuel fired boilers

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3 Bearing surface

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