Hinge bolts provide additional security for outward opening doors that have exposed hinge knuckles. They prevent the door being removed from the frame in the event of the hinge knuckle being attacked by interlocking the door into the frame. Bolt Dia. mm 12.5 Bolt Length mm 48 Corrosion Rating 2 - Occasionally damp/wet, rural and sheltered areas Description Hinge bolts provide additional security for outward opening doors that have exposed hinge knuckles. They prevent the door being removed from the frame in the event of the hinge knuckle being attacked by interlocking the door into the frame. Finish Zinc Keep Size H x W mm 51 x 29 Material Steel No. of CSK Screws 2 Product Code 200999 Screw Size imp. 6 x 1 Screw Size mm 3.5 x 25