HOLO-KROME 08100 براغي كتف مقبس 5/8 × 1-1/4 بوصة | رأس مقبس | محرك مقبس | فولاذ سبائكي أكسيد أسود حراري (25 / عبوة)

The shoulder is ground so smooth it slides into a bearing bore without any fight, which is exactly what I needed for a pivot arm. These 5/8" x 1-1/4" screws took some serious torque on the hex socket without stripping. Solid, precise hardware that did the job first try.

Used one as a pivot for a custom jig and the precision ground shoulder kept everything true with zero wobble, even under side load. The thermal black oxide finish feels tough and hasn't chipped after a week of shop use. Packaging held all 25 screws snug, no rattling around in the box.

The hex socket drive made installation a breeze with my Allen key, and the precision ground shoulder works perfectly as a smooth axle for my small machinery project. These screws are solid and well-made for the price.