4mm Internal Tooth Star Lock Washers Set With Push On Locking For Quick Speed Locking And Beefy Securement Black Steel Finish 100 Pcs Made From 65Mn Steel For High Strength Anti Rust And Wear Resistant Fasteners For Automotive And Machinery

4mm Internal Tooth Star Lock Washers, Black Steel
✔️ 4mm ID, 12mm OD, 0.3mm thick, 1.4mm height; 65Mn steel

These 4mm internal tooth star lock washers deliver extra locking force and friction between fasteners and their mounting surface. They're commonly used in automotive, machinery, and home or workshop projects.

✅ Inside Diameter: 4mm
✅ Outside Diameter: 12mm
✅ Thickness: 0.3mm
✅ Height: 1.4mm
✅ Material: 65Mn steel
✅ Color: Black
✅ Pack: 100 pcs

💡 What is an internal tooth star lock washer used for in mechanical assemblies?
Here's a concise rundown:
- Handy locking feature for fasteners and substrates.
- Increases friction and rotational resistance to prevent loosening.
- Made from 65Mn steel for high strength, anti-rust, wear resistance.
- Ideal for automotive, machinery, furniture, electronics in indoor/outdoor settings.