High Strength Alloy Steel Bolts Nuts Fasteners Grade 8.8 10.9 12.9 For Mining Equipment

OEM custom design

•    Production process: casting, forging
•    Applicable machines: Mills, crushers
•    Applicable industries: cement, stone, coal, metal recycling, metallurgy, chemicals, etc.
•    Applicable materials: sulfates, silicates, carbonate ores, limestone, iron ore, clay minerals, chemical raw materials, etc.
•    Material types: medium carbon steel, high-strength alloy steel (35CrMo, 40Cr, 42CrMo), etc.

High‑Strength Bolts and Nuts Grade 8.8 / 10.9 / 12.9

Our alloy‑steel high‑strength bolts and nuts belong to critical mining‑equipment fastener accessories, widely applied for ball mills, rotary kilns, crushers and other heavy‑duty mining machinery.

Made of premium alloy steel materials, these grade‑8.8, grade‑10.9 and grade‑12.9 fasteners feature high tensile strength, excellent fatigue resistance and reliable anti‑loosening performance under heavy‑load, high‑vibration working conditions.

We support OEM & custom manufacturing according to your drawings, dimensions and special requirements. Multiple surface treatments are optional: black oxide, phosphating, hot‑dip galvanizing, Dacromet coating etc.

•    Material: Alloy steel
•    Strength Grade: 8.8, 10.9, 12.9
•    Product Type: Hex bolts, studs, anchor bolts, matching nuts & washers
•    Standard: ISO, DIN, ASTM, GB/T
•    Surface finish: Black oxide, phosphating, hot‑dip galvanized, Dacromet
•    Service: OEM custom per drawing / sample
•    Application: Mining equipment, ball mill, rotary kiln, cone crusher, heavy‑duty industrial machinery

•    Before the sale, we will fully understand the customer's working conditions and recommend the most suitable material options.
•    Provide drawings to customers based on machine models, spare parts dimensions, etc.
•    After-sales: We will continue to monitor product usage and provide timely assistance.
•    Free quotations are provided, global sales, short delivery times, and low prices.

We are engaged in the manufacturing and supply of bolts and nuts for crushers and mills. These bolts and nuts are manufactured using high-quality raw materials and advanced technology, meeting established industry standards. Before final shipment, our quality experts conduct precise inspections of these bolts and nuts based on various quality parameters. In addition, our customers can purchase bolts and nuts of different sizes according to their specific requirements, and we support custom production.

•    Easy to install;
•    Corrosion resistance;
•    Accurate dimensions.