Grade 10.9 Black Iron Bolts with Integrated Spring Washer, Pan/Mushroom Head Combo.

These high-strength bolts are designed for durability and reliability, featuring a Grade 10.9 rating. They are crafted from robust black iron, ensuring longevity and resistance to wear and corrosion. Each bolt is equipped with an integrated spring washer, offering enhanced security and stability by maintaining tension and preventing loosening from vibrations. The innovative pan/mushroom head combo design provides a sleek appearance and allows for easy installation with a standard driver. Ideal for a wide range of industrial and mechanical applications, these bolts deliver superior performance where strength and resilience are paramount. Head shape: Hexagon socket Surface treatment: Black Material Grade: 10.9 Product Grade: C-Class Standard No.: National Standard Nail Type: Screws Manufacture country: China Instructions included: No