Pressure die cast brass hatch lock with cam compression function in either a brass or chrome plated finish. The compression function of this hatch lock means that it is ideal for use on watertight closures where a seal needs to be correctly compressed in order to prevent water ingress. The product is available in two versions, either with or without a cylinder lock. The cylinder lock simply prevents the handle from being lifted. The hatch lock is supplied with a backing plate which is secured to the hatch lock itself with M3 fixings (not supplied).