21 Sets 5/16 x 1-1/4 Hex Head Lag Screws with Flat Washers, 304 Stainless Steel 18-8 Black Zinc Plated Heavy Duty Lag Bolts for Wood, High Torque Fasteners with Included Hex Socket Driver

5/16 x 1-1/4 Inch Hex Head Lag Screws with Washers
✔️ 304 Stainless Steel Black Zinc Heavy Duty Lag Bolt Set

This is a 21-set kit of 5/16 x 1-1/4 inch hex head lag screws built for heavy duty wood fastening. These lag bolts are commonly used for decks, framing, fence posts, and outdoor wood projects where high torque and solid clamping strength are needed.

✅ Pack size: 21 lag screws, 21 flat washers, 1 piece 1/2 inch hex socket driver bit
✅ Size: 5/16 x 1-1/4 inch
✅ Material: 304 stainless steel with black zinc plating
✅ Finish: corrosion resistant coating for indoor and outdoor use
✅ Head style: hex head for high torque driving
✅ Washer included: flat washers add stability and load distribution
✅ Thread style: coarse threads for strong bite in wood
✅ Suitable for pressure treated lumber, landscape lumber, logs, timber, softwood, and hardwood

💡 What are hex head lag screws used for in heavy wood construction projects?
They are designed to clamp wood tightly and handle higher loads than standard wood screws.

• Thick shank and coarse threads provide strong pull out resistance

• Hex head design allows higher torque without stripping

• Flat washers spread load to protect wood surfaces

• Stainless steel construction resists rust in outdoor environments

This lag screw set is a handy choice when you need strong holding power, clean installation, and long term reliability for demanding wood fastening jobs.