50 Pack 8.8 Grade Alloy Steel M12 Split Lock Washers, Spring Lock Washers For Screws And Bolts, Heavy Duty Jobsite Grade Black Finish For Tightening, Vibration Resistance, High Tensile Metal Locking Washers For Industrial DIY Projects

Bulk 50-Pack M12 split lock washers in 8.8 steel black
✔️ 8.8 grade alloy steel, black finish, M12 split lock washers - 50 pcs

These heavy-duty M12 split lock washers are made from 8.8 grade alloy steel with a black finish, designed to deliver strong tension and resist loosening in vibration-prone assemblies. They are ideal for industrial, construction, and DIY projects where fasteners need to stay tight.

✅ Made from 8.8 grade alloy steel for strength and corrosion resistance in harsh environments
✅ Split design provides greater bolt tension and prevents loosening from vibration
✅ Compatible with M12 screws, nuts, and bolts; solid bearing surface protects material
✅ 50 pieces per pack, ready for bulk jobs and long-term use

💡 What is a lock washer used for in fastener assemblies? Lock washers provide grip and resistance to loosening in vibration-prone equipment.
- Increases bolt tension and keeps joints tight
- Distributes load to prevent material tearing
- Works with standard washers for uniform contact surface