#17 x 4" Construction Lag Screws

Screw engineering specs:

• Average shear strength of #17 shank—5294 lbs
• Average pull-out strength—2082 lbs (screw pull-out is calculated with a 3" length screw in the wood species: yellow pine.)
• Triple Coating: 1200-hour corrosion resistance in both ACQ and salt spray conditions.

#17 x 4" Construction Lag Screws

Many construction fasteners come with a “knurl“, or multiple small protrusions at the top of the threads. This helps ensure that once the end of the threads are reached, the remaining smooth surface of the fastener slides easily, allowing for higher compression forces thanks to its now greatly reduced friction.

#17 x 4" Construction Lag Screws

Use T40 Driver Bit

Modified truss head screw (11/16" head diameter) has better compression that forces deep, wide, sharp screw threads.

High quality, heat treated steel

Torx/Star drive wood screw head, provides twice the torque of Phillips or square drive screw heads.

#17 x 4" Construction Lag Screws

Type 17 screw point for quick starts without "walking."

3/8" construction lag screw thread diameter. High quality scr/ew threads cut cleanly and easily through tough materials. The wide and sharp screw threads provide maximum holding power.