Ideal for 5.5mm diameter screws. Smaller diameter screws/bolts can be sealed but washers are liable to fall off before application. Slightly larger diameters upto 6.3mm can also be used with these washers but assembly will be tighter and require more force to assemble.
Washers perform a vital role in cladding applications. It is important that washers are selected according to the requirements of the particular application. All our Bonded Washers are EPDM (Ethylene Propylene Diene Monomer) backed, to give the very best possible seal, ensuring a watertight fix over the life of the construction.
A washer is used to seal head of fastener (make watertight), as an isolator or to increase the pullover value. A washer must be used if a colour cap is to be fitted. A washer also gives a good indication of when over driving (Washer inverts).
