4-40 x 1/2 Knurled Thumb Screw Full Thread Aluminum MPP188 It has a square head

It has a square head that sits flush with the surface of the material

This screw is designed for use in metal applications where tapping is not practical

20 threads per inch

The washer is typically used in applications where a high level of vibration is present

4-40 x 1/2 Knurled Thumb Screw Full Thread Aluminum MPP188 It has a square headThe 4 40 x 1 2 Knurled Thumb Screw Full Thread Aluminum is a small, versatile fastener that is commonly used in a variety of applications. It is made of aluminum, which makes it lightweight and corrosion resistant. The knurled head provides a secure grip, even when your hands are wet or oily. The full thread design allows for a secure hold in a variety of materials. This screw is perfect for use in electronics, machinery, and other applications where