Product Description
The ASSY SK 3.0 are partially threaded high performances structural fasteners. They are ICC-ESR [3179] & CCMC approved fasteners, designed to pull tightly together connection elements and are recommended when head pull-through is the governing consideration.
Their design offers a precise setting without the need for pre-drilling [may be recommended for long models]. Their blue passivated zinc coating makes them adequate for use in low corrosive environments, such as dry service condition. They participate in LEED BD+C 2.0 certification [MRc 4.1 & 4.2, 2 points possible] thanks to the percentage of post-consumer recycled steel used to manufacture them.
| Diameters | 1/4″ (6 mm) , 5/16″ (8 mm) , 3/8″ (10 mm) , 1/2″ (12 mm) |
| Lengths | 1-3/4″ (50 mm) to 20-1/2″ (520 mm) |
Specifications 
| Specification | ASSY SK | Thread Length | Drive Bit | Packaging Qty. | ||||
|---|---|---|---|---|---|---|---|---|
| # Item | Material | Head Type | in. | mm | in. | mm | ||
| [3] SK0650 | Hardened Steel | Washer Head | 1/4" x 2" | 6 x 50 | 1 3/4" | 45 | RW 30 | 100 |
| [3] SK0660 | Hardened Steel | Washer Head | 1/4" x 2 3/8" | 6 x 60 | 1 1/2" | 37 | RW 30 | 100 |
| [3] SK0670 | Hardened Steel | Washer Head | 1/4" x 2 3/4" | 6 x 70 | 1 5/8" | 42 | RW 30 | 100 |
| [3] SK0680 | Hardened Steel | Washer Head | 1/4" x 3 1/8" | 6 x 80 | 2" | 50 | RW 30 | 100 |
| [3] SK0690 | Hardened Steel | Washer Head | 1/4" x 3 1/2" | 6 x 90 | 2" | 50 | RW 30 | 100 |
| [3] SK06100 | Hardened Steel | Washer Head | 1/4" x 4" | 6 x 100 | 2 3/8" | 60 | RW 30 | 100 |
| [3] SK06120 | Hardened Steel | Washer Head | 1/4" x 4 3/4" | 6 x 120 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06140 | Hardened Steel | Washer Head | 1/4" x 5 1/2" | 6 x 140 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06160 | Hardened Steel | Washer Head | 1/4" x 6 1/4" | 6 x 160 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06180 | Hardened Steel | Washer Head | 1/4" x 7 1/8" | 6 x 180 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06200 | Hardened Steel | Washer Head | 1/4" x 7 7/8" | 6 x 200 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06220 | Hardened Steel | Washer Head | 1/4" x 8 5/8" | 6 x 220 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06240 | Hardened Steel | Washer Head | 1/4" x 9 1/2" | 6 x 240 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06260 | Hardened Steel | Washer Head | 1/4" x 10 1/4" | 6 x 260 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06280 | Hardened Steel | Washer Head | 1/4" x 11" | 6 x 280 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK06300 | Hardened Steel | Washer Head | 1/4" x 11 7/8" | 6 x 300 | 2 3/4" | 70 | RW 30 | 100 |
| [3] SK0860 | Hardened Steel | Washer Head | 5/16" x 2 3/8" | 8 x 60 | 2" | 50 | RW 40 | 50 |
| [3] SK0880 | Hardened Steel | Washer Head | 5/16" x 3 1/8" | 8 x 80 | 2" | 50 | RW 40 | 50 |
| [3] SK08100 | Hardened Steel | Washer Head | 5/16" x 4" | 8 x 100 | 2 3/8" | 60 | RW 40 | 50 |
| [3] SK08120 | Hardened Steel | Washer Head | 5/16" x 4 3/4" | 8 x 120 | 3 1/8" | 80 | RW 40 | 50 |
| [3] SK08140 | Hardened Steel | Washer Head | 5/16" x 5 1/2" | 8 x 140 | 3 1/8" | 80 | RW 40 | 50 |
| [3] SK08160 | Hardened Steel | Washer Head | 5/16" x 6 1/4" | 8 x 160 | 3 1/8" | 80 | RW 40 | 50 |
| [3] SK08180 | Hardened Steel | Washer Head | 5/16" x 7 1/8" | 8 x 180 | 3 1/8" | 80 | RW 40 | 50 |
| [3] SK08200 | Hardened Steel | Washer Head | 5/16" x 7 7/8" | 8 x 200 | 3 1/8" | 80 | RW 40 | 50 |
| [3] SK08220 | Hardened Steel | Washer Head | 5/16" x 8 5/8" | 8 x 220 | 4" | 100 | RW 40 | 50 |
| [3] SK08240 | Hardened Steel | Washer Head | 5/16" x 9 1/2" | 8 x 240 | 4" | 100 | RW 40 | 50 |
| [3] SK08260 | Hardened Steel | Washer Head | 5/16" x 10 1/4" | 8 x 260 | 4" | 100 | RW 40 | 50 |
| [3] SK08280 | Hardened Steel | Washer Head | 5/16" x 11" | 8 x 280 | 4" | 100 | RW 40 | 50 |
| [3] SK08300 | Hardened Steel | Washer Head | 5/16" x 11 7/8" | 8 x 300 | 4" | 100 | RW 40 | 50 |
| [3] SK08320 | Hardened Steel | Washer Head | 5/16" x 12 5/8" | 8 x 320 | 4" | 100 | RW 40 | 50 |
| [3] SK08340 | Hardened Steel | Washer Head | 5/16" x 13 3/8" | 8 x 340 | 4" | 100 | RW 40 | 50 |
| [3] SK08360 | Hardened Steel | Washer Head | 5/16" x 14 1/4" | 8 x 360 | 4" | 100 | RW 40 | 50 |
| [3] SK08380 | Hardened Steel | Washer Head | 5/16" x 15" | 8 x 380 | 4" | 100 | RW 40 | 50 |
| [3] SK08400 | Hardened Steel | Washer Head | 5/16" x 15 3/4" | 8 x 400 | 4" | 100 | RW 40 | 50 |
| [3] SK08420 | Hardened Steel | Washer Head | 5/16" x 16 1/2" | 8 x 420 | 4" | 100 | RW 40 | 50 |
| [3] SK08440 | Hardened Steel | Washer Head | 5/16" x 17 1/4" | 8 x 440 | 4" | 100 | RW 40 | 50 |
| [3] SK08480 | Hardened Steel | Washer Head | 5/16" x 19" | 8 x 480 | 4" | 100 | RW 40 | 25 |
| [3] SK08520 | Hardened Steel | Washer Head | 5/16" x 20 1/2" | 8 x 520 | 4" | 100 | RW 40 | 25 |
| [3] SK10100 | Hardened Steel | Washer Head | 3/8" x 4" | 10 x 100 | 2 3/8" | 60 | RW 50 | 50 |
| [3] SK10120 | Hardened Steel | Washer Head | 3/8" x 4 3/4" | 10 x 120 | 3 1/8" | 80 | RW 50 | 50 |
| [3] SK10140 | Hardened Steel | Washer Head | 3/8" x 5 1/2" | 10 x 140 | 3 1/8" | 80 | RW 50 | 50 |
| [3] SK10160 | Hardened Steel | Washer Head | 3/8" x 6 1/4" | 10 x 160 | 4" | 100 | RW 50 | 50 |
| [3] SK10180 | Hardened Steel | Washer Head | 3/8" x 7 1/8" | 10 x 180 | 4" | 100 | RW 50 | 50 |
| [3] SK10200 | Hardened Steel | Washer Head | 3/8" x 7 7/8" | 10 x 200 | 4" | 100 | RW 50 | 50 |
| [3] SK10220 | Hardened Steel | Washer Head | 3/8" x 8 5/8" | 10 x 220 | 4" | 100 | RW 50 | 50 |
| [3] SK10240 | Hardened Steel | Washer Head | 3/8" x 9 1/2" | 10 x 240 | 4" | 100 | RW 50 | 50 |
| [3] SK10260 | Hardened Steel | Washer Head | 3/8" x 10 1/4" | 10 x 260 | 4" | 100 | RW 50 | 50 |
| [3] SK10280 | Hardened Steel | Washer Head | 3/8" x 11" | 10 x 280 | 4" | 100 | RW 50 | 50 |
| [3] SK10300 | Hardened Steel | Washer Head | 3/8" x 11 7/8" | 10 x 300 | 4" | 100 | RW 50 | 50 |
| [3] SK10320 | Hardened Steel | Washer Head | 3/8" x 12 5/8" | 10 x 320 | 4 3/4" | 120 | RW 50 | 50 |
| [3] SK10340 | Hardened Steel | Washer Head | 3/8" x 13 3/8" | 10 x 340 | 4 3/4" | 120 | RW 50 | 50 |
| [3] SK10360 | Hardened Steel | Washer Head | 3/8" x 14 1/4" | 10 x 360 | 4 3/4" | 120 | RW 50 | 50 |
| [3] SK10380 | Hardened Steel | Washer Head | 3/8" x 15" | 10 x 380 | 4 3/4" | 120 | RW 50 | 50 |
| [3] SK10400 | Hardened Steel | Washer Head | 3/8" x 15 3/4" | 10 x 400 | 4 3/4" | 120 | RW 50 | 50 |
| [3] SK10460 | Hardened Steel | Washer Head | 3/8" x 18 1/8" | 10 x 460 | 4 3/4" | 120 | RW 50 | 25 |
| [3] SK12200 | Hardened Steel | Washer Head | 1/2" x 7 7/8" | 12 x 200 | 4" | 100 | RW 50 | 25 |
| [3] SK12240 | Hardened Steel | Washer Head | 1/2" x 9 1/2" | 12 x 240 | 4 3/4" | 120 | RW 50 | 25 |
| [3] SK12260 | Hardened Steel | Washer Head | 1/2" x 10 1/4" | 12 x 260 | 4 3/4" | 120 | RW 50 | 25 |
| [3] SK12300 | Hardened Steel | Washer Head | 1/2" x 11 7/8" | 12 x 300 | 4 3/4" | 120 | RW 50 | 25 |
| [3] SK12400 | Hardened Steel | Washer Head | 1/2" x 15 3/4" | 12 x 400 | 5 3/4" | 145 | RW 50 | 25 |
| [3] SK12480 | Hardened Steel | Washer Head | 1/2" x 19" | 12 x 480 | 5 3/4" | 145 | RW 50 | 25 |
| [3] SK12520 | Hardened Steel | Washer Head | 1/2" x 20 1/2" | 12 x 520 | 5 3/4" | 145 | RW 50 | 25 |
CAD Drawings
Design Guides
A catalog with all information on our ICC & CCMC code-approved fasteners, including dimensions, references & design properties.
Companion to the Structural Screws Catalog, it provides easy-to-read tables for the most common mass timber connections with design values & installation instructions.
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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