Furniture Screws Threaded Inserts for Wood Furniture Assortment 3/8"-16 x 25mm,40Pcs Pack Universal 3/8"-16 Furniture Screws Threaded Inserts. Works for various wood project such sofa legs/ table/ cabinet/ shelf/ chair and any wood craft you may know.Comes with hex spanner for easy installation. Main Features: Smooth Surface, Non-Slip, High Hardness, Wear & Rust Resistance and Oxidation Resistance. Specification: Thread Type: 3/8"-16 Total Length: 25mm External Diameter: 15.35mm Internal Hex:9.5mm Material: carbon steel Hex Spanner: 9.5mm Quantity: 40 Pack 3/8"-16 x 25mm nut Screws with a 9.5mm hex spanner How to Use: Pre-drill/ drill a proper size hole with length about 28mm, then screw in with an internal hex tool. Tips: 1. We suggest drilling a hole with diameter 15 +/- 0.2mm; 2. If the wood material is with high-hardness,the screw hole diameter should be expanded appropriately. 40pieces Pack of 3/8-16 furniture screws threaded inserts for wood furniture such as soft woods, plywood and composition board. Size: Internal Thread Insert Type: 3/8"-16, External Diameter: 15.35mm, Total Length: 25mm. (3/8"-16 x 25mm). Material: High quality carbon steel with high hardness. These furniture screws are wear-resistant and very durable to use,ensure a long time using in severe environment. Standard internal hex socket type without burr and non-slip design. Usage: Pre-drill /drill a well-sized hole (Suggest that the diameter of the hole is 15 +/- 0.2mm, the length is about 28mm), then use an internal hex tool to screw in (Hex Spanner Included). Tip: If the furniture wood is with high-hardness, please enlarge the screw hole. Applications:These furniture screws are suitable for furniture hardwood/ solid wood, for furniture combinations.A necessity fastener for furniture repair!