براغي ذات رأس أسطواني #10-24 × 7 بوصة | محرك سداسي | ملولبة جزئيًا | سبيكة فولاذية معالجة حرارياً باللون الأسود (100/عبوة)

Installed these in a jig I’m building for a production run, and the hex socket drive made tightening them in tight spots a breeze. The black oxide finish looks clean and seems like it’ll resist rust better than the plain steel ones I used before.

I needed extra-long screws for a custom jig I was building, and these 7-inch ones fit perfectly. The hex socket drive made installation smooth, and the black oxide finish looks clean even after tightening.

The thermal black oxide finish is holding up great so far, no scratches even after racking them in a tooling fixture. Threads ran clean through the steel plate without any binding, and the hex drive grabbed perfectly every time.