industrial/metallic shots are a favorite for me. that you chose springs is also a hit in terms of ingenuity. technically the detail is great. b&W is a good choice, too. the starkness of contrast helps to say how crucial it is to stay united. lovely overall. high marks.
Since you had to do it from the ground up (couldn't shoot from the side), I'd have made the trinity more balanced. Really good tones here. Probably won't score well, but I like it.
Not sure what those are. They look like really big springs. The tonal range is nice...but I wish you hadn't cut off the right side, and I think a little more depth of field so that the top of whatever-that-is was in focus would improve it.
i don't know what this is, but i'll make a guess that it's a spring suspension on a rail car maybe? i do see that the camera is pointing upwards but i don't think this is a strong interpretation of the challenge idea...
too tight on the right, too lose on the left, framing is just a bit off. Interesting subject for a black & white, probably better straight on, (but then doesn't meet the challenge)