They are actually stronger than most metal and chemical anchors

5/8-18 x 3 1/4 Hex Cap Screw SS 18-8 (A2)

Proof load strength is 175

#56 Heavy Duty Jobber Drill Bit

5/8-11 x 2 1/4 Hex Sleeve Anchor Zinc Plated (25)

14 x 8 TimberLOK® Heavy Duty Wood Screw (12) 9/16-12 Grade 8 Hex Cap Screws Yellow Zinc Plated They are actually stronger than14 x 8 TimberLOK Heavy Duty Wood Screw (12) . TimberLOK Heavy Duty Wood Screws are designed with shear values stronger than 3 8 inch lag screws. The sharp point and aggressive thread angle penetrate the densest woods without pre drilling. A uniquely tapered head countersinks easily into wood for a sharp flush appearance. TimberLOK screws come with a proprietary three step Xylan coating process that protects against corrosion, even in pressure treated