Can anyone please tell me where I can purchase proper “rounded-top, single-notched chrome screws” that fit into the XK120 OTS front windshield posts? I need 4-screws to install a pair of after-market
wind-wings.
wind-wings.
You’re looking for 2BA slotted raised countersunk chromed screws. They’re still out there. But of course mostly in the UK.
Namrick in the UK has them. See here: 2BA RAISED COUNTERSUNK (R/CSK) SLOT CHROME PLATED MACHINE SCREW | eBay
But you could also re-tap these threads and replace them for stainless M5 versions, but that might also not be easy to find in the US.
Bob K.
Will be easier to find, round-head straight-slot stainless, than chrome…
Be aware that while the “wind-wings” may do a good job keeping wind out of the cockpit, the lower part of the wings can interfere with the forward part of the “open” doors.
Also, the side curtains can’t be properly attached while the wind-wings are in place.
Good luck.
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You could retap the holes for #10-32 and get slotted oval head stainless screws from McMaster-Carr, part 91790A829
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Moss has C2015, a chromed raised countersunk screw 3/4" long. You may have to shorten the length if it is too long.
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Yes, I believe that’s what I did with mine some time back. As the catalogs from Moss are free, I keep some on hand for other makes as sometimes the parts for other cars will crossover to our '120s (that even Moss isn’t aware of). Pretty sure these same screws are also found somewhere on the MG TC’s. I did have to trim them short with a fine hack saw and file.
On a side note, it’s worthwhile buying a dozen or two extra long cheese-head slotted 2BA screws and nuts for keeping around as spares. They can be trimmed to length as needed. Ebay vendors typically sell them in various bulk amounts for the best prices/ shipping.
As Bob says, the correct term for these is ‘slotted, raised countersunk’ screws, size 2BA, chromed. These are a very common size on all makes of British cars right up to the early seventies, from Morris Minors and Minis to Rolls Royces. I’d be careful of just recutting a thread to a different size as you will lose some strength for the new fastener. You might be able to helicoil the hole to the new size - I’d practice on scrap first.
I don’t like using stainless fasteners in place of chrome. Partly because stainless can be brittle, and can gall easily, but mostly because it looks so different. You can spot a stainless screwhead where there should be a chromed one very easily. The correct screws really should be easy enough to get, even in the US. Be aware that a ‘cheese-head’ screw has a very different shaped head, like, well, a cheese.
You might try “From the Frame Up” - MG TC specialist that has a lot of the right kind of hardware which could be common - be aware that most TC fittings are BSF and I’ve been bemused at what I’ve found on my Jaguar.
Whilst there is a 3/16BSF size, I’ve not come across it in use in British cars - my Riley pre-dates the TC, and whilst all fasteners on it are BSF, anything smaller than 1/4BSF is BA. Pre war cars will have a mixture of BSF, BA and BSC (British Standard Cycle) threads.
XK140s were built in a transition period - for example the rear wings are attached by BSF fasteners, whereas a friend’s are UNF.
Just had a quick look online and see that Moss US has some:
You might have to get over-long ones and cut them down. They have other sizes.
It appears that ‘raised countersunk’ translates into American as ‘oval head’.