The Sealey 320 Piece Steel Hex Nuts Assortment Imperial UNC is a comprehensive nut collection designed for professionals and engineers working with imperial thread systems. This steel nut assortment provides an organised selection of the most commonly used UNC (Unified National Coarse) thread sizes, manufactured to DIN 934 specification for reliable quality and dimensional accuracy. The partitioned storage box keeps each size separated and easily accessible on-site or in the workshop, helping tradespeople maintain an efficient workflow. With 320 pieces across four essential sizes, this assortment is ideal for maintenance engineers, plant fitters and contractors who regularly work with imperial threaded fasteners on machinery, equipment or American-manufactured components. The selection includes 120 pieces each of 1/4"UNC and 5/16"UNC nuts for lighter-duty applications, alongside 50 pieces of 3/8"UNC and 30 pieces of 1/2"UNC for heavier fixings. This distribution reflects the practical demands of typical maintenance and assembly work, ensuring you have adequate stock of the most frequently required sizes whilst covering larger fastening requirements. Features and Benefits: • Manufactured to DIN 934 standard for consistent quality • Imperial UNC thread sizing for compatibility with American equipment • Partitioned storage box for organised size separation • Steel construction provides strength and durability Specifications: Brand: Sealey Contents: (Approximate Quantity) 1/4"UNC (x120), 5/16"UNC (x120), 3/8"UNC (x50), 1/2"UNC (x30) Nett Weight: 1.69kg