Features 1、[High Quality Steel] These T Nuts are coated with Black Xylan which is one of the highest forms of corrosion resistant metals, making it last longer than other T Nuts on the market today. 2、[Good Performance] Made of high quality carbon steel, the nut has high hardness, long service life and good performance. 3、[T Nuts] Our T nuts are very strong and are great for both indoor and outdoor use. This galvanized layer is superior to carbon steel and provides excellent rust resistance. 4、[Great To Keep Around] Bolts Dropper T nuts are great to have around for use in wood and wet environments. 5、[Scope of Application] Widely used in RV machinery and equipment, electronic equipment, communication equipment, hardware lighting, building bridges, furniture decoration and other related industries. Specification Item Type: T Nuts Material: Carbon Steel Color: Silver Scope of Application: Widely Used in RV Machinery and Equipment, Electronic Equipment, Communication Equipment, Hardware Lighting, Building Bridges, Furniture Decoration and Other Related Industries. Surface Treatment: Galvanized Product Specifications: 1/4in-18x10: Inner Diameter: 1/4in; Base Diameter: 18mm / 0.7in; Height: 10mm / 0.4in 5/16in-20x10: Inner Diameter: 5/16in; Base Diameter: 20mm / 0.8in; Height: 10mm / 0.4in 3/8in-25x12: Inner Diameter: 3/8in; Base Diameter: 25mm / 1.0in; Height: 12mm / 0.5in Package List 45 x Nut 1/4in-18x10 45 x Nut 5/16in-20x10 20 x Nut 3/8in-25x12