Inch Screw. Suitable for solid wood / wall with wall plug. Thread is thicker and sharper.
mm Size Screw. Thread is finer and is flat. If material is thick enough for the thread, the hold can be very strong. Best to reinforce with a nut. Usually use for metal / aluminium / stainless steel.
Miscellaneous
Normal sliding window crescent lock without key
Lock pad for the other panel
Flush Boot-fitting at casement window inner frame without center "meriam". If this is faulty, window cannot open.
