98514UNC Hexagon locknut DIN985 UNC 1/4" steel zinc-plated Class 8 Kramp Self-locking hexagon nut (locknut) with Unified National Coarse (UNC) thread, an American screw thread with coarse pitch. Fitted with a nylon ring to prevent loosening due to vibration etc. Thread diameter 1/4 Inch Thread type UNC Coils per inch 20 Measurements type Imperial Wrench/Spanner size 7/16 Inch mHeight 8,3 mm Material Steel Surface treatment Zinc-plated Quality 8.8 DIN standard 985