The limited coating thickness permitted on most fasteners severely hampers the protection available to resist stress corrosion cracking and galvanic corrosion, two of the most common reasons for fastener failure. The same limited coating thickness inadequately protects the surrounding structure after long use, especially if it is depleted in some areas. Abuse of the head drive recess in steel screws leads to premature corrosion of that area and subsequent damage to surrounding aluminum structure.
© 1975 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
1975
Association for Materials Protection and Performance (AMPP)
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