براغي ذات رأس أسطواني 1/2-13 × 7 بوصة | محرك سداسي | صناعة أمريكية | فولاذ سبائكي مع أكسيد أسود حراري (125 / عبوة)

The black oxide finish on these is genuinely uniform, no flaking or bare spots after I torqued them down on a jig plate. The hex socket drive seated cleanly every time, and all 125 pieces threaded without a single bad one.

Used two of these for a heavy jig I’ve been building in the shop, and the hex socket drive made torquing them down with an Allen key a breeze. The alloy steel feels plenty solid, and the black oxide finish has a nice matte look that’s holding up well. For a hundred and twenty-five pieces, these are

The black oxide finish on these screws looks clean and professional, and the hex socket drive made installation with an Allen key smooth and precise. They feel solid for a jig project I’m working on, no stripping or wobble.