you will find a selection of the Hopkins Range of fasteners here.
This type of fastener is usually found on clothing, however is useful for tarpaulin covers as well.
This Fastener requires a dot to be lifted before it will release.
Or star lock washers. are used on rods and lock into place when hammered on. A hand tool is available for fitting
Cloth to cloth and cloth to wood are available. a Buckle that needs to be turned to release this fastener make it popular for side blinds.
Hand tools for all of the fasteners to be found here.