How it connects
The male slotted spigot pushes inside the open bore of the PA5a hollow tube end, seating by friction or secured with metal adhesive / set-screw depending on the fitting.
Male and female halves
Male slotted insertion plug/spigot inserting into a female cylindrical hollow tube end.
Usually connects to
- DOLLE Prova PA5a 3/8-inch stainless steel infill tube female interior
Common sizes
- Nominal 3/8-inch (approx. 9.5 mm to 10 mm outer tube diameter, ~8 mm internal plug diameter).
Where it is used
architectural railing systemsstaircases and deck balustrades
Variations
- Straight tube-to-tube connector
- Adjustable elbow (PA10a) insert
How to recognise it
A small cylindrical slotted spigot (~8 mm diameter) extending from a DOLLE Prova railing elbow or inline connector designed to mate inside 3/8" OD hollow tubing.
Often confused with
| Confused with | How to tell them apart |
|---|---|
| Prova handrail connector insert | Handrail inserts are much larger (~1.5 inch / 40 mm diameter) compared to the 3/8-inch PA5a infill tube inserts. |
Also called
Prova tube connector spigotProva PA5a tube insertProva infill tube splice pin
Good to know
Proprietary connection interface specific to the DOLLE Prova railing system for attaching modular accessories (elbows, splices) to PA5a stainless steel infill tubes.
Related connections
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