Heavy duty cranked steel butt hinges with a fixed pin are manufactured from a thicker gauge of steel and are ideal for use on heavy duty internal doors. Corner Type Square Corrosion Rating 2 - Occasionally damp/wet, rural and sheltered areas Description Heavy duty cranked steel butt hinges with a fixed pin are manufactured from a thicker gauge of steel and are ideal for use on heavy duty internal doors. Finish Zinc Hole Dia. mm 7.30 Knuckle Dia. mm 12.0 Knuckle Type Plain Length inch 4 Length mm 100 Material Steel Max Door Weight kg 40 Open Width mm 73 Pack Dimensions L x W x H mm 170 x 92 x 10 Pack Weight kg 0.420 Pattern 451 Product Code 434569 Rec Screw Dia. mm 5.0 Rec Screw Gauge imp. 10 Screws Required Per Pair 16 Size L x W mm 100 x 73 Thickness mm 2.5