مسامير آلة سداسية 1/4-20 × 5/8 بوصة | فولاذ مطلي بالزنك | ملولبة بالكامل (400 / عبوة)

I was pleasantly surprised at how uniform the threading is on these bolts—every single one threaded smoothly into my steel brackets without any binding.

Zinc plating looks clean and even across all 400 bolts, no rust spots or stripped threads out of the box. I've used maybe sixty so far on a metal frame project and every one seated perfectly without needing to chase the threads.

The fully threaded shank made all the difference when I needed to bolt through a steel bracket into wood with zero gap. The zinc coating held up nice during a rainy week outside, no rust spots yet. Happy with this batch of 400 for the price.