Gas Tank Petcock Bung Hole Taps (1) - Choose Tap Type / Size Type - Specs:1/4" BSP (Thread O.D. .518" x 19 TPI - USE 26/64" Drill Bit) Matchless & AJS motorcycles up

Matchless & AJS motorcycles up to approx 1967

Most points covers we stock here in this listing will fit both Triumph and BSA singles

Also fits BSA A10 650 (Goldenflash

We have many Wassell Evolution bore sizes to choose from

Gas Tank Petcock Bung Hole Taps (1) - Choose Tap Type / Size Type - Specs:1/4" BSP (Thread O.D. .518" x 19 TPI - USE 26/64" Drill Bit) Matchless & AJS motorcycles upBefore you prep and begin painting your gas tank, make sure your petcock bung holes are clean with sharp threads. It is not uncommon to find gas tanks with damaged or crossed threads from "hacks" over the years We stock a few types of bung hole taps BSPP (British Straight Parallel Pipe & British Standard Pipe Tapered) all suited for various applications on Triumph, BSA, Norton and other makes and models Our petcock bung hole taps can also be used for