M3 20mm+6mm Male to Female Thread Brass Hex Standoff Spacer

M3 x 20mm+6mm Male to Female Thread Brass Hex Hexagonal Standoff Spacers, A Brass M3 Hex Standoff Male To Female Threaded Type (Jack screws) is a threaded separator of defined length used to raise one assembly above another. They have hex-shaped sides for wrench tightening, made of brass come in male-female forms. In electronics, they are frequently used to raise a printed-circuit board above a surface. Standoffs keep two parts from touching each other, thereby preventing electrical shorts.