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Portals
Sourcing
These websites contain information about companies, parts, or materials.
- AutomotiveOEM™ — Database of automotive fastener suppliers
- Fabricating.com — (Website has displayed a placeholder for some time; they may be offline.)
- Fasteners Clearing House Sourcing Network — Search for parts manufacturers and distributors currently have in stock.
- Industrial Fasteners Institute — Manufacturer Search
- ThomasNet® — Product sourcing and supplier discovery platform
- TSF Global Fastenting Solutions — (Spain)
- Zycon — Industrial directory, engineering resource, and vertical search engine
Engineering
These websites contain information about parts and applications.
- Comparison of Tool Steel Standards and Specifications — from West Yorkshire Steel
- European Steel and Alloy Grades/Numbers — Free steel alloy database.
- Fasten.it Technical Data — Database with technical specifications of the products and comparison among DIN, ISO, UNI, AFNOR, EN norms.
- MatWeb — Material propery data
- Octopart — Search engine for electronic parts
- Steel Grade Equivalent — from DFW Machine
- TraceParts — A huge choice of 2D & 3D CAD files, models and drawings.
- Trace Parts Online — Free 2D & 3D CAD files, models and drawings of mechanical, electrical & mechatronics part catalogs
Standards
- ASSIST Quick Search — Database of military specifications.
Miscellaneous
- Irvan-Smith Technical Information ( "How to Measure a Rivet" is highly relevant.)
Forums
- Elsmar Forums — ISO Q&A, engineering questions, general business practices.
- Finishing.com — Questions and answers about finishing; they also have a technical library which is useful.