M5-0.8 x 40 DIN 7500C E Pan 6-Lobe Recess Thread Rolling Screw Full Thread Zinc & Wax KPO and the flat washer helps

and the flat washer helps to prevent the screw from sinking into the material

which means that it has a built-in washer that helps to prevent the nut from loosening

This 1/4-20 finished hex nut is made of durable steel and features a black oxide finish for corrosion resistance

Their combination Phillips and slotted drive allows for easy installation using either a screwdriver or a drill bit

making it ideal for outdoor and harsh environments

M5-0.8 x 40 DIN 7500C E Pan 6-Lobe Recess Thread Rolling Screw Full Thread Zinc & Wax KPO and the flat washer helpsThe M5 0. 8 x 40 DIN 7500C E Pan 6 Lobe Recess Thread Rolling Screw Full Thread Zinc & Wax is a high performance screw designed for demanding applications. It features a 6 lobe recess drive for increased torque transmission and reduced cam out. The full thread design provides maximum holding power, while the zinc and wax coating offers excellent corrosion resistance. The screw is manufactured from high quality steel for superior strength and