HOLO-KROME 77510 براغي رأس مقبس 3/8-24 × 5 بوصة | محرك مقبس سداسي | سبيكة فولاذ أكسيد أسود حراري (50 / عبوة)

These 5-inch screws threaded perfectly into my jig without any binding. The hex socket drive gripped the driver bit firmly, making assembly much smoother than I expected from bulk fasteners.

The black oxide finish looks even better in person than in photos, and the threading on all fifty pieces stayed clean through my entire project. Only knocked off a star because a few screws had slightly tight fittings that needed a bit more torque than expected.

Used a few of these for a press jig and the hex drive seated perfectly without stripping. The black oxide finish has held up well after a week of use, though I wish the package came with a few extras for the price.