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Simpson ECCQ3X-SDS2.5HDG End Column Cap for 3-1/8" Beam, Variable Post, Custom Non-Returnable

Simpson ECCQ3X-SDS2.5HDG End Column Cap for 3-1/8" Beam, Variable Post, Custom Non-Returnable

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  • This item is made to order and is non-returnable- Please call us at 888-794-1590 for exact lead times on this product


Simpson Strong-Tie ECCQ End Column caps provide a high-capacity connection for column-beam combinations. This design uses Simpson Strong-Tie Strong-Drive SDS Heavy-Duty Connector screws to provide faster installation and provides a greater net section area of the column compared to bolts. The SDS screws provide for a lower profile compared to standard through bolts. The Strong-Tie ECCQ3X-SDS2.5HDG post base features a hot dip galvanized finish for added corrosion resistance and requires the use of hot-dip galvanized fasteners which meet the specifications of ASTM A153.


  • Install 1/4"x2 1/2" Strong-Drive SDS Heavy-Duty Connector screws, which are provided with the column cap. (Lag screws will not achieve the same load.)
  • CCOQ and ECCOQ column cap only (no straps) may be ordered for field-welding to pipe or other columns. Dimensions are same as CCQ and ECCQ.
  • For rough-cut lumber sizes, provide dimensions. An optional W2 dimension may be specified with any column size given. (Note that the W2 dimension on straps rotated 90° is limited by the W1 dimension.)

NOTE: The correct fasteners installed in the correct position must be used to achieve published load values

Looking for something different? See the rest of our Simpson ECCQ End Column Caps.

California Residents: WARNING


Height: 7"
Fasteners required: Beam - (14) 1/4" x 2 -1/2" SDS Screws; Post - (14) 1/4" x 2-1/2" SDS Screws
Thickness: 7 Gauge
Width: (See Image 2) W1: 3.25" - 3.5625"; W2: 3.625" - 7.875"
Finish: Hot Dip Galvanized
Manufacturer name: Simpson Strong-Tie
Beam size: 3-1/8"
Product Guide: View Spec Sheet
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× WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects and other reproductive harm. For more information visit:

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