Joined: Apr 2018 Posts: 190 Threads: 75
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Hi,
Does anyone know what thread is on the wing screws that hold the opening windscreen in place.
I believe they're probably 5/16 but I've no idea if BSW or BSF.
John.
Joined: Apr 2018 Posts: 190 Threads: 75
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Sorry, probably didn't explain very clearly.
I haven't actually got the wing screws to measure but as I'm about to make the barrel nuts they screw into I need to know what thread they should be tapped.
John.
Joined: Mar 2015 Posts: 5,436 Threads: 231
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Location: Scotchland
The thread is normally 5/16 BSW.
Joined: Aug 2017 Posts: 910 Threads: 22
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Location: Near Cambridge, UK
Car type: 1928 tourer (mag type), short chassis Gould Ulster
There is more tensile strength in a male BSF thread than in a BSW, but the BSW thread itself is stronger and will better resist getting stripped.