Specification Brand : Glarks BulletPoint1 : ♛【What You Get】: This kit come with 100pcs internal tooth lock washers, 100pcs external tooth lock washers, 100pcs split lock washers and 100pcs flat washers. Total for 400pcs. Lock washers of different specifications are stored separately by type in an easy-to-carry transparent box. Easy to use, avoid losing or confusing spring washers during use. BulletPoint2 : ♛【Reliable Material】: Lock washers are made of high-strength stainless steel 304. It has good corrosion resistance and long service life. It is more resistant to oxidation and rust. Can withstand harsh environments ranging from high humidity to extreme temperatures. Has maximum strength. Ensures reliability in all applications. BulletPoint3 : ♛【Exterior and Interior tooth lock washer】: Size ID x OD: m3 x 5.5mm, m3 x 6mm, m4 x 7.7mm, m4 x 8mm, m5 x 9.4mm, m5 x 10mm, m6 x 10.5mm, m6 x 10.8mm, m8 x 14.3mm, m8 x 14.7mm, m10 x 17.6mm, m10 x 17.8mm. Toothed star washers ensure electrical grounding and improve grounding connections in utility trailers. Can be used in automotive restoration applications to prevent nuts from unscrewing. Also used in the installation of kitchen cabinet knobs and pulls to prevent them from turning. BulletPoint4 : ♛【Spring Lock Washer】: Size ID x OD x Thickness: m3 x 5 x 0.9mm, m4 x 6.4 x 1.2mm, m5 x 7.9 x 1.4mm, m6 x 9.4 x 1.7mm, m8 x 12.7 x 2.2mm, m10 x 15.8 x 2.8mm. Split lock washers are primarily used to prevent nuts, bolts and screws from rotating and loosening due to vibration and friction. Serves to hold objects in place. Ensure the stability of the machine. Can be used to connect moving parts or prevent loose connections, such as furniture repair, outdoor construction and electrical repair. BulletPoint5 : ♛【Flat Washer】: Size ID x OD x Thickness: m3 x 7 x 0.6mm, m4 x 9 x 0.9mm, m5 x 10 x 1mm, m6 x 11.7 x 1.5mm, m8 x 15.7 x 1.5mm, m10 x 19.6 x 1.4mm. Flat washers are designed to provide even load distribution. Ensure stability under high stress conditions. Protects surfaces from damage, reduces wear on bolts and screws, and helps prevent material deformation. Ideal for reducing friction and preventing leaks in plumbing systems. ExteriorFinish : Zinc ExternallyAssignedProductIdentifier1 : 0698435925816 ExternallyAssignedProductIdentifier2 : 698435925816 GpsrSafetyAttestation : 1 ItemName : Glarks 400pcs M3 M4 M5 M6 M8 M10 External & Internal Tooth Lock Washers and Split Lock Washers with Flat Washer Set, 304 Stainless Steel ItemPackageDimensions_Height : 3.5 centimeters ItemPackageDimensions_Length : 19.5 centimeters ItemPackageDimensions_Width : 13 centimeters ItemPackageQuantity : 100000 ItemTypeKeyword : tooth-lock-washers Manufacturer : Glarks Material : Stainless Steel ModelNumber : G-4409 NumberOfItems : 400 PartNumber : G-4409 ProductDescription : Glarks 400pcs M3 M4 M5 M6 M8 M10 External & Internal Tooth Lock Washers and Split Lock Washers with Flat Washer Set, 4 Styles 304 Stainless Steel Lock Washers for Mechanical Equipment Fasteners