Self locking hexagon nuts similar to DIN 982 but in inch sizes. Gr. 5 (or higher) zinc plated white ½“ 13 UNC 100 pcs. Or minimum qty Gr. 5 (or higher) zinc plated white 3/8“ 16 UNC 100 pcs. Or minimum qty Gr. 5 = or according DIN 8.8 (8)