براغي ذات رأس مقبس 1-8 × 16 بوصة | محرك سداسي المقبس | ملولبة جزئيًا | فولاذ سبائكي مع أكسيد أسود حراري

Installed these in a jig I’ve been building, and the thermal black oxide finish held up well against chips and coolant. The partial threading made alignment much easier than fully threaded bolts.

The 16-inch length is exactly what I needed for a custom jig, and the partially threaded design gives me plenty of grip without bottoming out. The hex socket drive seated perfectly in my driver, no wobble at all. These feel like they’ll hold up for years in my shop.

The black oxide finish on these screws looks great and seems durable, and they threaded smoothly into my jig without any binding. Exactly what I needed for a precise assembly.