HOLO-KROME 72174 براغي رأس مقبس 3/8-16 × 3 بوصة | محرك سداسي المقبس | فولاذ سبائكي مؤكسد حراري أسود (50 / عبوة)

I needed high-strength fasteners for a jig build, and these 3/8-16 x 3" alloy steel screws threaded in perfectly without any galling. The hex socket drive seated cleanly with just a standard Allen key, exactly what you want for precision work.

I needed some precise fasteners for a jig setup and these fit the bill perfectly. The hex socket drive made installation straightforward, and the 50-count pack is great value. Only wish they came in a slightly smaller quantity for smaller projects.

The black oxide finish on these is nice and uniform, and the hex socket drive seated perfectly with my Allen wrench. They held up fine in a jig I'm building, though I wish the package had come with a few extras since I'll need to order more for the next project.