Identify flag hinge screws Post questions and find answers on glazing, double glazing, upvc glazing, conservatory glazing, fixtures and fittings etc....

[bandtiuk]

Can anybody help me identify these uPVC door hinges and what the screws do? I need to adjust the door but the screws don't tally with any that I have found so am not sure which screws to adjust. I'm looking to adjust the compression. Thanks in advance!