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MSC995 Center Bolt 5/8in X 12 in Special High-Quality Leaf Spring Center Bolt and Nut for Truck Chassis
PRODUCT PARAMETERPARAMETER
Quality | 8.8 10.9 |
Hardness | HRC23-34 / HRC33-38 |
Material | 45# steel/ 40Cr(SAE5140) |
Surface | Black oxide, Phosphated, Zinc Plated, Dacromet |
Color | Black, Grey, Silver, Yellow |
Logo | as required |
Packing | neutral package or as required |
Delivery Time | 30-40 days |
MOQ | 1000 PCS |
Bolt Size | Head Size | Thread | ||
Length | ||||
Diameter | Length | Diameter | Height | |
5/16 | 2 1/2 | 1/2 | 3/8 | 2 |
5/16 | 3 | 1/2 | 3/8 | 2 1/2 |
5/16 | 4 | 1/2 | 3/8 | 2 1/2 |
5/16 | 6 | 1/2 | 3/8 | 4 |
3/8 | 3 | 9/16 | 5/16 | 2 1/2 |
3/8 | 3 1/2 | 9/16 | 5/16 | 2 1/2 |
3/8 | 4 | 9/16 | 5/16 | 2 1/2 |
3/8 | 5 | 9/16 | 5/16 | 4 |
3/8 | 6 | 9/16 | 5/16 | 4 |
3/8 | 8 | 9/16 | 5/16 | 6 |
3/8 | 10 | 9/16 | 5/16 | 9 1/2 |
3/8 | 12 | 9/16 | 5/16 | 9 1/2 |
7/16 | 4 | 5/8 | 3/8 | 3 |
7/16 | 5 | 5/8 | 3/8 | 4 |
7/16 | 6 | 5/8 | 3/8 | 4 |
7/16 | 8 | 5/8 | 3/8 | 5 1/2 |
1/2 | 8 | 3/4 | 7/16 | 5 1/2 |
1/2 | 10 | 3/4 | 7/16 | 9 1/2 |
1/2 | 12 | 3/4 | 7/16 | 9 1/2 |
5/8 | 12 | 7/8 | 1/2 | 9 1/2 |
Types of center boltsINTRODUCTION

Our premium leaf spring center bolts and nuts are specifically engineered for use in truck and trailer chassis, delivering exceptional performance and durability. Made from high-quality materials such as 45# steel or 40Cr (SAE5140), these bolts are offered in strength grades 8.8 and 10.9, adhering to industry standards for reliability and stability. The hardness levels range from HRC23-34 for Grade 8.8 and HRC33-38 for Grade 10.9, making them suitable for high-stress environments typical in commercial vehicle applications.
To enhance their lifespan and resistance to corrosion, we provide various surface finishes, including phosphating, zinc plating, and Dacromet. Customers can choose from a selection of colors, including black, grey, silver, and yellow. Each bolt is meticulously designed to ensure a perfect fit and secure attachment within leaf spring systems, contributing to improved vehicle safety and stability.
We offer an extensive range of sizes and specifications to meet the diverse needs of different vehicle models and chassis configurations. Furthermore, our OEM and ODM services enable us to customize bolts based on client specifications and technical drawings, providing tailored solutions for specific applications. With rigorous quality control measures in place, our center bolts are an excellent choice for dependable and robust leaf spring assemblies in commercial vehicles.
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