HOLO-KROME 76066 M4-0.7 X 14mm براغي ذات رأس أسطواني بمقبس سداسي | محرك سداسي داخلي | فولاذ سبائكي مؤكسد أسود حراري (100 / عبوة)

I’ve used these on a few fixtures now and the thermal black oxide finish holds up beautifully without any rust after cutting fluid and coolant exposure. The hex drive bites cleanly every time, no stripped heads even at higher torque.

These M4s went into a jig I'm building and the thermal black oxide finish is honestly what sold me — it's got that slick, uniform look and they threaded in clean with zero binding. The 14mm length and hex socket drive made them perfect for the tight spots where a wrench can't reach, no complaints at

The hex socket drive grabs perfectly with my ball-end Allen key, and the 14mm length is just right for securing jig components. For the price of a hundred, this batch will keep my shop running for months.