Hendrickson 32043-7 or 320437 is a genuine suspension part carrying a 5/8-11 UNC thread call-out. That reads as a five-eighths inch diameter with eleven threads per inch, in the Unified National Coarse series, so check the thread size against the old piece before you order. It is listed under suspension springs and related components. Call us with your Hendrickson suspension model and we will help confirm proper fit.FeaturesGenuine Hendrickson suspension part5/8-11 UNC thread (five-eighths inch diameter, eleven threads per inch, coarse series)Listed under suspension springs and related componentsSold individually (unit of measure: each)Tech SpecsThread: 5/8-11 UNC