3/8 UNF Steel Hex Lock (Half) Nut Self-Colour. Conform to DIN 439B. MPN: 3/8 UNF Steel Hex Lock (Half) Nut Attributes: Box Quantity: 100 Driving Features: Hexagon Material: Steel Nut Type: Half Surface Treatment: Plain Thread: UNF Thread Direction: Right Thread Size: 3/8in