PolyGrip Blind Rivet Nuts. The GESIPA blind rivet nuts with a large clamping range. The PolyGrip blind rivet nuts from GESIPA are a consistent advancement based on years of experience with our PolyGrip multi-range blind rivets. With the advantages of large hole tolerance and the ability to cover various clamping ranges with just one fastener, the PolyGrip blind rivet nut has become a top choice connector in many industrial applications and also in craftsmanship. Consolidating multiple dimensions saves handling and storage costs and significantly reduces the risk of confusion at the workplace, thereby minimizing subsequent quality issues. Large clamping range. Ideally, a PolyGrip blind rivet nut can replace up to five different dimensions of DIN-standard blind rivet nuts due to its large clamping range. This results in the following benefits for you: - Type limitation - Reduction of type variety in stock - Decreased risk of confusion, leading to fewer processing errors.