Mechanical Series 
All Symbols (Blocks) are compatible with AutoCAD^® R14 & LT97 or higher

Over 150 Structural Angle Iron Symbols make up this library. All Angle Iron conforms to AISC's LRFD Manual of Steel Construction, 2nd Edition. The AISC advisory regarding changes to the k and k1 dimensions are incorporated into each block if applicable.

Over 75 Structural Channel Symbols make up this library in both standard "C", as well as "MC" types. All Channel conforms to AISC's LRFD Manual of Steel Construction, 2nd Edition. The AISC advisory regarding changes to the k and k1 dimensions are incorporated into each block if applicable.

Over 300 Structural Tee Symbols make up this library in  "MT", "ST" and "WT" types. All Structural Tee Symbols conform to AISC's LRFD Manual of Steel Construction, 2nd Edition. The AISC advisory regarding changes to the k and k1 dimensions are incorporated into each block if applicable.

Over 410 Structural Wide Flanges Symbols make up this library in both standard "W", "HP", "S" and "M" types. All Wide Flanges conform to AISC's LRFD Manual of Steel Construction, 2nd Edition. The AISC advisory regarding changes to the k and k1 dimensions are incorporated into each block if applicable.

Over 940 Structural Steel Shape Symbols make up this library. It is a compilation of our Angle Iron, Channel, Structural Tees and Wide Flange symbols. All Structural Steel Shape Symbols conform to AISC's LRFD Manual of Steel Construction, 2nd Edition. The AISC advisory regarding changes to the k and k1 dimensions are incorporated into each block if applicable.

Over 60 Mechanical Weld Symbols which are a part of the American National Standard Weld and Welding Symbols, and conform to the American National Standard ANSI/AWS A2.4-79 sponsored by the American Welding Society.

For an External Source for Mechanical Symbols, please go to CAD-Symbols.com