HOLO-KROME 720002622 براغي رأس مقبس 1/2-13 × 8-1/2" | محرك مقبس سداسي | سبيكة فولاذ بأكسيد حراري أسود (10 / عبوة)

Used a full 10-pack on a pair of jigs last week and they torqued down clean without a single stripped head, even at 45 ft-lbs. Threads were smooth right out of the bag and the thermal black oxide gives them a nice, consistent dark finish. These will definitely handle repeated use on the drill press.

The black oxide finish is holding up nicely on these—eight and a half inches of solid alloy steel gives me real confidence when I’m torquing them down on a precision assembly.

Fit perfectly in my jig fixture where I needed that extra length. The black oxide finish on these seems really durable and the hex socket drove smoothly without any cam-out.