Description
Overview:
The Screw to Suit Villiers/JAP Petrol Engines (1/4" UNC) is a genuine old‐stock fastener for classic Villiers and JAP petrol engines. Made from durable metal with an imperial coarse thread, it provides a dependable clamp for engine assembly and maintenance tasks. The 1/4" UNC thread (1/4 inch ≈ 6.35 mm) offers a standard 20 TPI coarse profile for quick engagement and strong hold, ideal for serviceable joints on vintage engines such as JAP 3 and JAP 4. Being unused old stock, it can show light tarnish or storage marks without affecting performance. This genuine Villiers/JAP part helps maintain period-correct fixings, supporting reliable operation and authenticity in restoration or repair work where imperial fasteners are required.
Key Features:
- Genuine Part: authentic Villiers/JAP old-stock component for period-correct restorations
- Thread size: 1/4" UNC (approx. 6.35 mm) with 20 TPI (pitch ≈ 1.27 mm) for secure fastening
- Durable metal construction for repeatable torque and long service life
- Reliable compatibility with vintage Villiers and JAP engine assemblies
- Unused old stock; may show minor tarnishing from storage with no impact on function
- Coarse UNC thread for easy starting and good grip in tapped housings
- Straightforward to fit using standard hand tools appropriate to the head type
- Suitable for maintenance, rebuilds, and sympathetic repairs on classic petrol engines
Typical Applications:
Commonly used for assembling and securing engine components on Villiers and JAP petrol engines, including brackets, guards, covers, and general fixtures that were originally specified with imperial coarse threads. Useful in rebuilds, servicing, and authenticity-focused restorations where matching original thread forms is important, and where a dependable screw is needed to hold parts in alignment and resist vibration.
Also known as:
Set screw, machine screw, UNC screw, 1/4-20 fastener, retaining screw, imperial coarse-thread screw, restoration fastener, fixing, threaded fastener.
Fits Models:
JAP 3, JAP 4, JAP 5, JAP 6
Alternate Part Numbers:
20937
