Locking Screw Nut Assortment, 120pcs. M4 Female Brass Hex Spacer Stainless Steel Screw Set with Clear Box for Daily Use

Brass Gasket --- Brass gasket, rust and corrosion resistant, protects the workpiece from damage.

Stainless Steel Screw and Nut: The screw and nut are made of 304 stainless steel, high hardness, not easy to break.

Precision Threads: Precision threads are easy to tighten and not easy to fall out.

Metric Standard Size M4 --- Metric Standard Size M4 for daily basic maintenance and installation, as well as household chores.

Packed in Clear Box: Well packaged and sorted in a resealable clear box for easy storage and transportation.