براغي مقبس سداسي M6-1 × 22 مم | محرك مقبس سداسي | ملولبة بالكامل | فولاذ سبائكي فئة 8.8 مؤكسد أسود حراري (600 / عبوة)

Used a full box on a custom jig build, and the hex socket drove cleanly without any stripping. The thread was consistent on every single one—no duds in the batch. At this price per piece, I’ll be ordering another pack for future tooling projects.

The black oxide finish on these screws is a nice touch—it makes them look great in my precision assembly setup. Threads are clean and consistent across all 600, which saved me a lot of time.

Installed these on a custom fixture for a small production run and all 600 seated perfectly with no stripped threads. The black oxide finish seems durable enough for repeated use in a machine shop.