M2 x 4mm 3.2mm OD Brass Threaded Insert Embedment Knurled Thumb Nut 1000PCS

Description: A brass knurled nut, or thumb nut, is a nut with a knurled outside surface, rather than hex. This facilitates tightening by hand. These nuts are used in finished materials such as light fixtures, antique cars and motorcycles etc.

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