براغي رأس أسطواني M27-3 × 70mm | محرك سداسي داخلي | ملولبة بالكامل | فئة 12.9 من سبائك الصلب مع أكسيد أسود حراري (5/عبوة)

Picked up a pack for securing a heavy jig on my mill table, and the hex socket drive made installation straightforward even in a tight spot. The 70mm length was exactly what I needed for the through holes, and the black oxide finish seems to resist light oil residue well. These feel like they'll hol

I needed a full-thread length for a jig I was building, and these 70mm M27s fit the bill perfectly. The hex socket drive made installation straightforward with a standard Allen key. One of the five screws had a slightly uneven chamfer, but nothing that affected its function.

The black oxide finish is holding up well so far, and the 12.9 alloy steel feels extremely solid for my jig setup. Threads were clean and seated smoothly with a hex driver. Only minor gripe is the packaging could be a bit more secure to prevent scratches during shipping.