براغي رأس مقبس مقاس 1-3/8-6 × 8 بوصة | محرك مقبس سداسي | ملولبة جزئيًا | فولاذ سبائكي مؤكسد حراريًا أسود

Threaded these into a die fixture and the black oxide finish held up better than I expected. The hex socket drive made torquing them down precise without stripping.

I needed some heavy-duty screws for a jig I was building, and these 8-inch alloy steel cap screws fit the bill perfectly. The hex socket drive made installation much smoother than dealing with a stripped hex head.

The threading was clean enough that they seated perfectly in my jig without any binding, and the black oxide finish looks properly durable. I used them for a fixture plate and the partially threaded length gave exactly the grip I needed.