Heavy Nut Carbon Steel Spherical Hex Nut Manufacturer Wholesale

Heavy Nut Carbon Steel Spherical Hex Nut Manufacturer Wholesale. High Strength Material: Manufactured from carbon steel 45# and 40Cr, heat-treated to withstand high prestress. Precision Thread Matching: Threads perfectly match PSB500/830/930/1080 threadbars to prevent stripping. Multiple Surface Treatments: Available in self-color, black oxide, and zinc plate for anti-rust protection. Fast Delivery: 5-7 days for in-stock items; 7-30 days for customized orders. OEM/ODM Support: Accepts OEM/ODM requests for large quantities at no extra charge. Quality Certified: Follows ISO 9001 standards with strict material testing and inspection. Free Samples: Free samples provided; buyer only covers shipping costs.