Product Change Notice
3M™ MetPak™ Hard Metric (HM) and 3M™ Ultra Hard Metric
(UHM) Connector Color Change
Issue Number: 767
Date: July 7, 2010
Product Change
In an effort to improve our service to our global customers, we are transitioning to a uniform color – black,
for our 3M HM and UHM series connectors. The resin materials and the specifications of the connectors –
both electrical and mechanical remain unchanged. Customers purchasing these connectors will see a color
change in some of the molded components of the connector. The HM connector will change from having
natural colored molded components to black. The UHM series connectors will change from having natural
colored signal contact wafers to black. This will only affect the 3M part numbers with an HM or UHM
prefix. A complete list of part numbers impacted by this transition are shown on the next page.
This change will not affect the functionality of the connector. Further, the part numbers will not change due
to this transition. The exact material changes are explained in the table below.
Connector Series Component Current Resin New Resin
HM Insulator (Header and Socket) 30% Glass Fiber
Reinforced Liquid Crystal
Polymer (LCP) Natural
30% Glass Fiber
Reinforced LCP Black
Signal Contact Wafer (Socket) 30% Glass Fiber
Reinforced LCP Natural
30% Glass Fiber
Reinforced LCP Black
Cap (Header) 33% Glass Fiber
Reinforced Polyamide 66
Natural
33% Glass Fiber
Reinforced Polyamide
66 Black
Other Components 30% Glass Fiber
Reinforced LCP Natural
30% Glass Fiber
Reinforced LCP Black
UHM Insulator (Header and Socket) NO CHANGE
Signal Contact Wafer (Socket) 30% Glass Fiber
Reinforced LCP Natural
30% Glass Fiber
Reinforced LCP Black
Cap (Header) NO CHANGE
Other Components NO CHANGE
This change is effective immediately. No special last time buys are being offered as no products are being
discontinued. Nor is there any change to the functional and technical characteristics of the connectors. An
MSDS will be made available upon request.