Manufacturers CAD Data Links

PartSpec® is the ultimate source for pre-drawn mechanical and electrical parts and data. Here you'll find over one million parts that can easily be downloaded into your CAD drawings.
View PartSpec Drawings
PartSpec Manufacturer Listing

PlantSpec® contains hundreds of thousands of pre-drawn plant-design components from leading manufacturers, ready to drag and drop into any CAD drawing.
View PlantSpec Drawings
PlantSpec Manufacturer Listing

CADBlocks® is your single source for standard drawings and technical data for over 500,000 building products. It's an indispensable design resource for any architect or facilities manager. Contents by CMDGroup.
View CADBlocks Drawings
CADBlocks Manufacturer Listing

GLOBALSPEC (an Engineering Search Engine):
http://www.globalspec.com

ThomasNet (another Thomas Register search tool):
http://www.thomasnet.com/

Electrical Enclosure Manufacturers (with CAD Data):

Hoffman Engineering:
http://www.hoffmanonline.com/

Rittal:
http://www.rittal.com/

Saginaw Control & Engineering:
http://www.saginawcontrol.com/