12mm-1.0 Zinc Plated Class 8 Steel Extra Fine Thread Hex Nuts (50 pcs.)Type: Hex Nuts
Diameter 2: 21mm
Driver Type: #19 Wrench
Thread Size: 1.0mm (Extra Fine)
Hardness: Class 8
Type: Hex Nut
Specifications: DIN 934
Box of 50.
Hex nuts are used to secure and fasten the threaded portion of most machine screws and bolts.