Screw is 57mm overall. Note: Knobs are now standard across the bench plane range.

 Stanley Bailey Exploded Parts Diagram

• At the peak of their world wide popularity the bench plane range stretched from sizes #1 through to #8 with additional intermediate sizes such as #4-1/2 and #5-1/2
• Presumably to protect themselves from copies Stanley used relatevely obscure threads in many parts such as handle and knob mounting screws made from 13/64 inch drill rod and UNC12-20 threads.
• Many components are common across the bench plane range commonly used - patterns #3 through #8
• Unfortunately Y levers and lateral adjusters - parts 7 and 9 below - are unavailable separately
• At time of these notes - 2024 - complete frog kits are now discontinued (at least in the Australian market)
• Handle & knob kits in plastic remain available.
• OEM compatible Handle & Knobs, back irons and blades are available
• When their patents expired there were numerous other makers who cloned much of the range. Most maintained the Stanley threads.
• In recent times Stanley have started to use metric threads on some components. We have generous stocks of these items but do not yet list them