Qualfast: 1/4 BSW Hex Dome Cap Nut (GR-6) Imperial BSW(British Standard Whitworth) Steel Class 6 MPN: 1/4 BSW Hex Dome Cap Nut (GR-6) Attributes: Box Quantity: 200 Driving Features: Hexagon Grade: 6 Material: Steel Surface Treatment: Plain Thread: BSW Thread Direction: Right Thread Size: 1/4