HOLO-KROME 09052 مسامير كتف مقبس 16 مم × 80 مم | رأس مقبس | محرك مقبس | سبائك فولاذ أكسيد أسود حراري (25/عبوة)

Used one as a pivot pin for a jig I welded up, and the precision ground shoulder kept everything dead true through a full day of heavy use. The black oxide finish held up nice against shop grime and didn't gum up the hex socket. Honestly, these are the kind of screws you install and forget about.

I needed a shoulder screw for a custom jig and these 16x80mm ones fit perfectly as an axle in my assembly. The hex socket drive made installation straightforward with an Allen wrench.

The precision ground shoulder on these screws made aligning my jig so much easier than with standard bolts. They fit snugly into the bearing I needed them for, and the black oxide finish looks clean. Definitely worth the price for the pack of 25.