براغي رأس أسطوانية M4-0.7 × 20 مم | رأس مسطح محرك سداسي | خيط كامل | فولاذ سبائكي فئة 12.9 مطلي بالزنك (600 / عبوة)

The zinc plating on these M4-0.7 x 20mm screws is surprisingly even, and the hex socket drive grips the Allen key firmly without any stripping. I bought a full pack for my precision tooling and every single one threaded cleanly into the pre-tapped holes. For the price per piece, this is exactly what

I’ve been using these for jig assembly, and the hex socket drive makes installing them in tight spots a breeze. The zinc plating on the 12.9 alloy steel looks durable, and the full threading caught nicely—no stripped holes so far.

The hex socket drive made installing these into my jig frames quick without any slipping, and the 20mm length was perfect for my build. They came very clean and well-packed, no damaged threads in the whole bag.