D89 Wiremount Sockets 3M D89 Wiremount Sockets feature a .100' x .100' pitch for a 0.05' pitch cable. Sockets can be packaged on swords for easy loading of manual and semi-automatic assembly or in bulk packaging. 'Bumps' are designed to prevent premature latch locking during shipment. The 3M Wiremount D89 Socket has a 10µ gold plating.