YUKON™ Structural Lag Screws - 5/16" Hex Head

The advanced, Heavy Duty Structural Lag Screw with ZYTEC™ GX corrosion protection coating for typical exterior environments.

YUKON features a strong thread that ensures maximum withdrawal strength, a Fast Start Tip that easily grips and cuts its way through the wood, Self-Tapping Thread that cut effectively through materials such as wood, plastic and sheet metal. The patented Twin Blade Knurls1 ensure minimum friction on the shank and the cutting ribs under the head countersink perfectly with maximum wood contact.

For heavy duty commercial and residential applications, LVL (Laminated Veneer Lumber), trusses, deck framing, ledgers, landscaping, and much more! Great for any size job or project. 

General Info Detail
Type of Screw
Structural Lag Screw
Head Style
Washer Hex Head
Drive Bit
5/16″ Hex
Point Type
Modified Type 17
Technical Evaluation Reports
Construction #16 #18
Head diameter (inch)
.472
.630
Minor thread diameter
.181
.209
Major thread diameter
.283
.315
Shaft diameter
.205
.226
Drive Size
5/16″ Hex
5/16″ Hex

Steel & Coatings:

ZYTEC™ GX For General Exterior

Tested and recognized for use in most ground contact pressure treated lumber for general exterior construction as described by the American Wood Protection Association (AWPA) U1 UC4A or below. 

Additional Info & Downloads