【Size】 Lag Bolts: Thread Diameter: 1/4"; Screw Length: 2-1/2"; Thread Pitch: 0.09"; Head Diameter: 0.43", Head Height: 0.165". Ideal for outdoor woodworking, home and industrial applications. Package includes: 20 pcs 1/4"x2-1/2" bolts + 20 pcs flat washers. 【Material】304 stainless steel. Mywish lag screws offer durability and reliability. Lag screws have undergone stringent testing to ensure superior resistance to corrosion and rust, even in harsh and extreme environments. With a robust and stable structure, they provide enhanced strength and an extended service life. Please be aware that 304 stainless steel may exhibit slight magnetic properties due to structural changes that occur during processing. 【Wide Applications】 This 40-piece lag bolt kit features stainless steel hex head screws, ideal for a variety of furniture assembly tasks such as beds, tables, cabinets, chairs, woodworking projects(join wooden boards, build workbenches, and install kitchen countertops. The lag bolts can be used as furniture fasteners in timber framing, deck construction, and mounting outdoor fixtures. 【Packaging】 The 1/4" stainless steel bolt kit includes 40 pieces, neatly stored in a sturdy and reusable clear container. Each set is labeled with size and quantity for quick identification. Designed to offer flexible solutions, this all-in-one kit is perfect for various applications. 【AFTER SALE SERVICE】 MYWISH team aims to provide our customers with a professional service. Dedicated to promptly solving any concerns or queries. Please contact us if you have any issues with the products.