I'm not sure that such a very narrow depth of focus was put it it's best use here. You really lost a lot of the pattern, though maybe that's what you were going for. i like that you have repetition in the twists of the screws as well as the fact that you have more than one screw lined up creating another depth of rhythm
I like these minimal pictures, but they're a bit sort of ... well, I suppose they have to be lacking something or they wouldn't be minimal, but the so what? bell rings here.