براغي رأس سداسي M4-0.7 X 40mm | فولاذ فئة 8.8 عادي | ملولبة بالكامل (400 / عبوة)

I needed these for a repair on some equipment, and the hex head made it easy to tighten with a socket in tight spaces. They're fully threaded, which gave me more flexibility with the depth I needed. Solid quality for the price.

Installed a hundred of these on an equipment frame and every one threaded in cleanly with no binding. The 40mm length is just right for thicker brackets, and the hex head lets you really torque them down with a socket.

The 40mm length is perfect for mounting brackets where you need extra thread engagement. I did notice a few screws have slightly uneven threads, but nothing that affected function.