*PLUMBERSSTOCK EXPERT* responded:
Hello, Jim! We are thankful for your interest in this Sioux 425-PB 2-1/2" Closet Bolt. A specific product will only have one distinct product number. If you see that it has exactly the same product number (425-PB) and with the same manufacturer, then that bolt you're referring to is the same with this product. To give you a detailed explanation, each segment of the product number indicates something. In this case, "42" stands for the series. "5" means 2-1/2" bolt and "PB" means that it comes in "bagged pairs". This product is a box of 50 bagged pairs of closet bolts which each includes two 2-1/2" bolts and 2 nuts. Please check this Specification Sheet for reference. Please take note that both bolts and nuts are made of 40% glass-filled nylon. If this is what you're looking for, order it now by clicking the Add to Cart button and entering your zip code for shipping. Happy shopping at PlumbersStock.com!