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+--- Thread: Rare BSF quest (/showthread.php?tid=8451)
Rare BSF quest - Ray White - 18-03-2023
Please help!
I am looking for some 3/16" BSF c/s slot head machine screws. They need to be at least 3/4" long. I have 10 but I need another 6.
Unfortunately, it seems some BSF screws are becoming harder to find. I might consider buying a larger quantity if needs be. Any help would be appreciated.
Thank you,
Ray.
RE: Rare BSF quest - MartinH - 18-03-2023
I agree 3/16BSF have become very hard to find.
In a non critical application buy M5 and run a BSF die over them to shave a bit off. The pitch is almost identical, you just need to take 0.2mm off the diameter.
RE: Rare BSF quest - Ray White - 18-03-2023
Thanks for the tip, Martin.
As it happens I have been directed to 'Stainless Automotive Fastenings' website and purchased what I need.
Not cheap these days!!
Thanks anyway.
RE: Rare BSF quest - Stuart Giles - 19-03-2023
(18-03-2023, 07:33 PM)MartinH Wrote: I agree 3/16BSF have become very hard to find.
In a non critical application buy M5 and run a BSF die over them to shave a bit off. The pitch is almost identical, you just need to take 0.2mm off the diameter.
10-32 UNF fasteners are in practical terms directly interchangeable with 3/16" BSF as they are both 32 TPI. 10-32 screws are a lot easier to find than BSF fasteners.
Theoretical purists will point out that the thread angles differ, pretty well all US fasteners having a 60 degree angle, whereas British Standard anything threads (except Cycle) have a 55 degree thread angle. 3/16" fasteners are usually just used for attaching bits and bobs, if that's not the case, then matching the male and female threads really does matter.
RE: Rare BSF quest - Ruairidh Dunford - 19-03-2023
(18-03-2023, 07:04 PM)Ray White Wrote: Please help!
I am looking for some 3/16" BSF c/s slot head machine screws. They need to be at least 3/4" long. I have 10 but I need another 6.
Unfortunately, it seems some BSF screws are becoming harder to find. I might consider buying a larger quantity if needs be. Any help would be appreciated.
Thank you,
Ray.
I have some round head slots, you can have, Ray.
Email me your address at dunford1@aol and I will post them to you.