GB 2329 standard high strength U-bolts are made of premium high tensile steel with rigorous heat treatment for excellent hardness and load-bearing capacity. Specially designed as spring saddle bolts for automobiles and heavy-duty trucks, featuring stable clamping force and strong shock resistance for suspension fixing applications. Precision manufacturing fully complies with GB 2329 specifications, available in M16 and M20 sizes to match various heavy truck assembly requirements perfectly. Robust structure ensures firm connection and long service life under heavy load and harsh driving working conditions. Widely applied in heavy truck suspension systems, automotive chassis assembly and engineering machinery fixing scenarios. Factory direct supply with stable quality, ideal for global hardware purchasers and auto parts enterprises.