566-Piece Multi-Specification Set: This handy set includes bolts, nuts and washers in inch sizes, covering #1/4-20, #5/16-18, #3/8-16 (including flat washers and spring washers in sizes #1/4, #5/16, #3/8) in various lengths.
Sturdy Alloy Steel Material: Made of high-quality alloy steel, providing long-lasting durability and stability. The galvanized surface improves corrosion resistance, ensuring that the bolts and nuts remain rust-free and work well under various conditions.
Precision Manufacturing: Each component is precision machined to US Grade 5 mechanical performance and with a 48-hour salt spray test, these bolts and nuts provide reliable fastening and will not loosen or deteriorate over time.
Quick Part Identification: Comes with 3 adjustable transparent storage drawers. Each compartment is labeled for easy identification of different sizes, improving sorting, retrieval and overall work efficiency.
Versatile Use: Perfect for home repairs, DIY projects and maintenance tasks such as furniture assembly, vehicle repairs and instrument repairs. A must-have in your toolbox.
