[Jim Sims]

Sometimes I believe NLA means: "I'm too lazy to look it up or to inept to find it!" Perhaps you should check with another UK parts source or bite the bullet and buy it from Pelican. How's that for "carrying coals to Newcastle!"

I'm not sure what you mean by carbide steel but carbide is a material typically used for making machining cutters and drills and is not suited for use as a fastener (it's too brittle and lacks fracture toughness). I would suggest if you have to make a substitute screw you make one from a strength class 12.9 (alloy steel) fastener. One possible approach is to obtain a fully threaded fine thread (1.5 thread pitch) M12 12.9 strength class socket head cap screw with an 80 to 90 mm long shank length and have a machinist square up the tip and turn the tip down to make the 3mm long round tip "dog". The outside diameter of the head could also be turned down but not too much as the wall of the socket will become too thin and may deform during wrenching with the hex key. You may have to search a bit to find a full thread length fine thread M12 class 12.9 socket head cap screw. I can also imagine making a substitue screw from a length of fine thread M12 class 12.9 stud and brazing a nut (hex or allen nut) on one end but this approach is more elaborate and runs the risk of annealing the stud if the brazing is not properly done. Cheers, Jim