Best M4 Lock Washers in 2026

【✔】High Quality Stainless Steel External Tooth Star Lock Washers Assortment Set

【✔】Set Includes 8 Most Used Sizes: M2.5 M3 M4 M5 M6 M8 M10 M12 【Metric, please See Picture 2 for Specific Dimensional Size】

【✔】Made of 304 Stainless Steel Material, Very Good Corrosion Resistance, It Can Be Used in a Humid Environment

【Sizes】M2 M2.5 M3 M4 M5 M6 M8 M10 M12, total 900 pieces/9 sizes of the most commonly used black zinc washers, flat washers, metal washers in a plastic case, different size can satisfy your different needs.

【Design】Flat washers, metric washers, metal washers are designed for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection.

【Material】Black zinc plated steel, which have good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and excellent oxidation resistance, which can ensure long time using.

【✔】High Quality Stainless Steel External Internal Tooth Star Lock Washers Assortment Set

【✔】Set Includes 8 Most Used Sizes: M2(2.5) M3 M4 M5 M6 M8 M10 M12 【Metric, please See Picture 2 for Specific Dimensional Size】

【✔】Made of 304 Stainless Steel Material, Very Good Corrosion Resistance, It Can Be Used in a Humid Environment

Package Includes: 100 PCS M8 Metric Split Lock Washer

Specifications: outside diameter 13.1mm; inside diameter 8.7mm; compressed height 2.2mm; uncompressed height 5.25mm

Lock washers are commonly used in any application using a bolt where two pieces are being drawn together

Note Size(Appr.): Metric flat washer assortment sets. M6 stands for the inside diameter of washer, means 6mm (1mm=.039 inch) in I.D. ALL washers are SAME thickness(1.5mm), and All washers with a wider outside diameter(25mm) Note Inside Diameter is the hole diameter, outside diameter is the round diameter.

Fast and Easy Use: Crush washers are round and flat with hole. Note the space between the lock nut and nut (1.5mm Thickness). All screws depends on the inside diameter. that means M4 washer fit with M4 screws/bolt shanks.

Multi-purpose Application: Commonly used in household. with threaded bolts, screws, nuts and flat finishing washers to tie together to prevent through. Build and repair furniture, digital products. and so on.

1141 Pieces - Inch & Metric Stainless Steel Hex Nut, Lock Washer and Flat Washer Assortment Kit!

1/4", 5/16", 3/8" 1/2", M6, M8, M10, M12 Diameters Included

Includes: Durham 24 Hole Steel Compartment Tray (Made USA) Dim: 13-3/8"x9-1/4"x2"

High Quality 7 Kinds Metric M3 M4 M5 M6 M8 M10 M12 Stainless Steel Starlock Push on Washers Assortment kit total 350Pieces

Starlock Washer;External Push Rings; Push On Washers;Speed Clips;Push Nuts for Unthreaded Shafts

Material:304 stainless steel;304 stainless steel have good chemical resistance and may be mildly magnetic

Package Include: In this copper washer set, you can get a total of 160 assorted copper washers, including 12 metric flat washer sizes:M5, M6, M8, M10, M12, M14 M16, M20.

100% Copper Content: All flat washers are made of pure copper. Compared to steel and rubber gaskets, copper gaskets are more resistant to sealing, heat, corrosion and electrical conductivity.

Highly Functional: Copper washers with smooth and shiny surface can reduce the friction between screws and nuts to prevent loosening or disperse their pressure. It can also protect the surface of the connection surface to prevent damage.