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A Design Study in Steel - Cast Connex Steel Construction Connector

Critical Features and Tolerances

The three most critical  dimensional features in the connector are:
 

  1. The uniformity and the
     +/- tolerance of the 
    center slot opening.
    Too narrow, the gusset won't fit into the slot; too wide  and the bolted plates won't  have surface contact  with the gusset.

  1. The position, alignment, and the diameter of the bolt holes on the two plates.

  2. The angle, depth, and uniformity of the weld shoulder on the cylinder.
The dimensional tolerances for the castings are  specified by the ISO 8062 Grade CT8.  (The a grade specifies the tolerances per the basic  casting dimension.)
Dimension (mm/in) - Up to -- 1" / 25 mm 4" / 100 mm 10"/ 250 mm 25" / 630 mm
+/- Tolerance  (mm/in) Grade CT 8 0.05" / 1.2 mm 0.06" / 1.6 mm  0.09" / 2 mm 0.1"/ 2.6 mm


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Copyright 2009  by the Steel Founders' Society of America   All rights reserved. 
Address comments to: blairr@sfsa.org
Last Modified:October, 2009 by STG

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In cooperation with Cast Connex and Pacific Steel Castings