براغي مقبس 1-8 × 12 بوصة | رأس مسطح محرك سداسي | فولاذ سبائكي أكسيد أسود حراري (5 / عبوة)

Used these to secure a custom tooling fixture and the black oxide finish held up perfectly against any slight oil residue. The hex socket drive made installation with a standard Allen key quick and precise, no stripped heads.

I needed a few long fasteners for a jig I’m building, and these 1-8 x 12" alloy steel screws threaded in smoothly with the hex socket drive. The black oxide finish feels durable, and they held up fine under moderate torque. Exactly what I expected for precision work.

These 12-inch screws fit perfectly into my jig setup, and the hex socket drive made installation a breeze. The black oxide coating seems durable and gives them a clean, professional look.