Knurled Thumb Nuts 10 Pack M4 x D12mm x H3.5mm Brass Knurled Nut Flat Head Adjusting Nuts

Descriptions: 1. Material: The knurled thumb nut is made of brass with good conductivity and thermal conductivity corrosion resistance and wear resistance. 2. Advantages: The head has a knurled design to increase friction and it is easy to install and remove by hand without any tools. The thread is deep the tooth pitch is uniform and the fastening force is good. 3. Application: These knurled thumb nuts are widely used in the machinery industry furniture fastening 3D printing parts etc. Great for items that need quick adjustments. Use them to replace old ones or just store them for your next install.