"Fitted end links." I believe that's the term. Good luck with your search. I have the same LHC, only in blue, and the bracelet is maybe the worst part of it. I've never been able to get it to fit comfortably, and the 19mm width means finding another bracelet is very difficult. However, 20mm straps will generally cram in there. Leather, rubber, canvas, NATOs. I'd go that route. Unfortunately, the case between the lugs (the part the bracelet covers) is really roughly finished. Like, it matches with no other part of the watch and almost looks unfinished. I have no idea what Longines was thinking here. Even cheap Casios have consistent finishing between the lugs.

 

Finally have found a solution that works so far:
19mm Forstner Flat Link Bracelet for Omega Speedmaster (fully brushed in my case).

Forstner Flat Link Bracelet for Omega Speedmaster

Forstner's Take on the Flat Link Bracelet The flat link bracelet was, in our view, one of the most beautifully designed, and comfortable, bracelets ever offered for the Speedmaster. Its links were thin, so as to not overpower the watch with which it was paired. It was stretchy, so it remained...

forstnerbands.com

For Europe customers I recommend their UK Shop.

Sizing was easy, and you need to use the Forstner end-links but the spring bars needed some "bending". Let me know what you think:

 

It looks good to me. I don't think it would bother me,
but I am reminded of one thing. Though the Longines
lugs are long, the spring bar holes are not close to the
ends of the lugs.


Thanks,
rationaltime

 

Will all the straps from the Omega fit on the HC ? And how much did you have to bend the spring bar ? I have the same problem and I'm looking for a new strap, but the one you mention is sold out.

Thank you for reply in advance