Packing containing hex nut, flat washer, split washer.
Metric finish nuts are a type of fasteners with a threaded hole coarse or fine thread that are used for fastening to a hex cap bolt or socket screw or when mechanically joining materials together.
Flat washer provides a bearing surface for fastener load distribution or acts as a spacer.
This split lock washer provides a circular bearing surface with offset split ends which help bite into the mating material to provide a locking feature when tightened beneath a nut. It is round with a hole in the center and can be used where loosening from corrosion or vibration is a concern. Lock washers are commonly used in any application using a bolt where two pieces are being drawn together.