These Rubber Grommets are used to protect or cover through holes. There are 160 sizes available that will accommodate mounting holes ranging from 0.250 in - 2.50 in (6.4 mm - 63.5 mm) diameter and panel thickness ranging from 0.063 in - 0.375 in (1.6 mm - 9.5 mm).
        
                    Unit of Measure
                    
               
        
            Specifications
                                                                                Brands | 
                                                                        N/A HEYCO® | 
                                                                                Head Diameter | 
                                                                        N/A 0.938 in23.80 mm | 
                                                                                Inside Diameter | 
                                                                        N/A 0.438 in11.80 mm | 
                                                                                Mounting Hole Diameter | 
                                                                        N/A 0.687 in17.50 mm | 
                                                                                Overall Height | 
                                                                        N/A 0.313 in8.00 mm | 
                                                                                Maximum Panel Thickness | 
                                                                        N/A 0.063 in1.60 mm | 
                                                                                Maximum Temperature Rating | 
                                                                        N/A 221 ºF105 ºC | 
                                                                                Minimum Temperature | 
                                                                        N/A -40 ºF-40 ºC | 
                                                                                Color | 
                                                                        N/A Black | 
                                                                                Material | 
                                                                        N/A Styrene-Butadiene Rubber (SBR) | 
                                                                                Weight | 
                                                                        N/A 35 lb |