Unique Bargains Square Nuts, M4x13mmx3mm Zinc-Plated Metric Coarse Thread Assortment Kit, 25pcs

[THREADED SIZE] - M4 x 0.7mm.||[DIMENSION] - 0.51"(13mm) wide, 0.12"(3mm) high.||[MATERIAL] - Constructed from Carbon steel, white zinc plated finished, anti-rust and anti-corrosion, superior electrical conductivity.||[How to use] - Usually use screws to clamp the connected terminal wire; use a wrench to fix the square nut, and use a drive tool to lock the screw in the tightening position.||[Application]- It suitable for indoor and outdoor, widely used in civil furniture, equipment, construction, electrical appliances, industrial machinery, etc., generally used with fasteners, screws, washers, screws, etc., mainly for connection, assembly, fixing, and other functions.