Product Description
The ASSY A2 Stainless Steel Ecofast is a structural, corrosion-free, and self-tapping screw. The screw design reduces wood splitting while offering a precise setting without the need for pre-drilling. Code-approved reliability, the ASSY A2 Ecofast has been awarded an ICC-ESR approval in the United States.
| Diameters | 1/4″ (6 mm) , 5/16″ (8 mm) |
| Lengths | 2-1/4” (60 mm) to 11-7/8” (300 mm) |
The Ecofast A2 is suitable for a broad range of projects from log home building to multi-story mass timber construction.
Specifications 
| Specification | ASSY A2 Ecofast | Thread Length | AW Drive Bit | Packaging Qty. | ||||
|---|---|---|---|---|---|---|---|---|
| # Item | Material | Head Type | in. | mm | in. | mm | ||
| A2ECO0660 | Stainless Steel | Countersunk Head | 1/4" x 2 3/8" | 6 x 60 | 1 1/2" | 37 | AW 30 | 200 |
| A2ECO0680 | Stainless Steel | Countersunk Head | 1/4" x 3 1/8" | 6 x 80 | 2" | 50 | AW 30 | 100 |
| A2ECO06100 | Stainless Steel | Countersunk Head | 1/4" x 4" | 6 x 100 | 2 3/8" | 60 | AW 30 | 100 |
| A2ECO06120 | Stainless Steel | Countersunk Head | 1/4" x 4 3/4" | 6 x 120 | 2 3/4" | 70 | AW 30 | 100 |
| A2ECO06140 | Stainless Steel | Countersunk Head | 1/4" x 5 1/2" | 6 x 140 | 2 3/4" | 70 | AW 30 | 100 |
| A2ECO0880 | Stainless Steel | Countersunk Head | 5/16" x 3 1/8" | 8 x 80 | 2" | 50 | AW 40 | 75 |
| A2ECO08100 | Stainless Steel | Countersunk Head | 5/16" x 4" | 8 x 100 | 2 3/8" | 60 | AW 40 | 75 |
| A2ECO08120 | Stainless Steel | Countersunk Head | 5/16" x 4 3/4" | 8 x 120 | 3 1/8" | 80 | AW 40 | 75 |
| A2ECO08140 | Stainless Steel | Countersunk Head | 5/16" x 5 1/2" | 8 x 140 | 3 1/8" | 80 | AW 40 | 75 |
| A2ECO08160 | Stainless Steel | Countersunk Head | 5/16" x 6 1/4" | 8 x 160 | 3 1/8" | 80 | AW 40 | 75 |
| A2ECO08180 | Stainless Steel | Countersunk Head | 5/16" x 7 1/8" | 8 x 180 | 3 1/8" | 80 | AW 40 | 75 |
| A2ECO08200 | Stainless Steel | Countersunk Head | 5/16" x 7 7/8" | 8 x 200 | 3 1/8" | 80 | AW 40 | 75 |
| A2ECO08220 | Stainless Steel | Countersunk Head | 5/16" x 8 5/8" | 8 x 220 | 4" | 100 | AW 40 | 75 |
| A2ECO08240 | Stainless Steel | Countersunk Head | 5/16" x 9 1/2" | 8 x 240 | 4" | 100 | AW 40 | 75 |
| A2ECO08260 | Stainless Steel | Countersunk Head | 5/16" x 10 1/4" | 8 x 260 | 4" | 100 | AW 40 | 75 |
| A2ECO08280 | Stainless Steel | Countersunk Head | 5/16" x 11" | 8 x 280 | 4" | 100 | AW 40 | 75 |
| A2ECO08300 | Stainless Steel | Countersunk Head | 5/16" x 11 7/8" | 8 x 300 | 4" | 100 | AW 40 | 75 |
CAD Drawings
Design Guides
The most complete tool for high-capacity mass timber connections design using ICC and CCMC code approved ASSY structural fasteners.
Companion to the Structural Screws Design Guide, it provides pre-designed, easy-to-read tables for tens of mass timber connections using high-capacity ASSY self-tapping screws.
Code Approvals
Installation Instructions
The structural fasteners installation guide is a practical document designed to simplify the installation process of ASSY self-tapping screws.
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