4.0mm hinges for plastic frame:

The TH-43 hinge is very similar to the TH-23, but the TH-23 is bigger, 6.0mm wide, while the TH-43 is only 4.0mm wide，it is much smaller. This hinge suits most for glasses where there's only small space left for installing hinges on frame front.

It is suitable for any frame which exists soldering problem,such as wood sunglasses,plastic sunglasses,aluminum frame,horn eyeglasses,bamboo sunglasses etc,as its installed onto frame by pins or screws instead of soldering.

Material: high nickel with shinny nickel color plating.

Size:
4mm width, 4.0mm total height,

Drawing of TH-43:

Ways of installing hinges onto frames: by screws and single rivets:

by self-tapping screws: 1.2mm diameter with 3.5mm,4.2mm,5.0mm 6.0mm shaft length available for option
by single rivets: 

for front: 1.1mm diameter rivets, 6.0mm (TSV-03) and 8.0mm shaft length (TSV-13) available;

for temple: 1.2mm diameter rivets, 5.0mm,6.0mm,7.0mm,8.0mm,10.0mm shaft length available.

Please note these screws or rivets are enclosed  free for your order.