These Black Cranked Knob Bolts are tight fitting, well made and include a unique spring mechanism. Available in Black or Beeswax finishes and a choice of 4" or 6". The bolt slides through a receiver plate (mortice plate) which covers the hole made in the frame, wall or floor, making these cranked bolts suitable for outward opening doors.
Black Finish - this traditional satin black is baked in a high-temperature oven giving it an attractive, durable and corrosion-resistent finish. The finish is low maintenance when used internally, if used externally it will require more. In all cases we do recommend that it is wiped with a lightly oiled cloth periodically. This will help to remove surface dirt and restore it back to its original condition. This finish has been salt tested to 480 hours, which meets grade 5 British Standard.
Beeswax Finish - is the most authentic finish for steel. When the highly skilled blacksmiths have finished forging the colours left in the steel range from blue to deep red ochre. To preserve these beautiful colours and texture they are finished with just pure beeswax. You will need to apply a good quality natural beeswax periodically to maintain the subtle, matt richness of the metal and provide the protection it needs. For INTERNAL USE only. Some surface rust may occur with time, this can be treated with 00 grade wire wool followed by a light coating of beeswax.
Never use any form of metal cleaner or aerosol spray.
Supplied with matching fixings. The screws supplied are hand finished, so please take care when fixing. Always use a pilot drill.
Black Cranked Knob Bolts
- Fixing Plate - 90mm x 36mm
- Receiver Plate- 34mm x 19mm
- Fixing Plate - 158mm x 51mm
- Receiver Plate- 51mm x 25mm
Due to the hand crafted nature of the products all measurements are approximate. These should be used as a guide only.
Generally in stock and dispatched within 2 - 3 days