M20 X 50mm 杯形點六角套裝螺絲 | 合金鋼 (25 個/包)

The hex socket drive handled the torque perfectly when I tightened these into some machinery slides. For under twenty bucks you get twenty-five pieces, which is a solid deal for M20 alloy steel set screws in my book.

The cup point bites into the shaft exactly where I need it, so no more slipping under vibration. These M20s are seriously tough, and the hex socket made torquing them down in a cramped spot way easier than I expected.

The hex socket drive let me get these snug into a tight machine frame without stripping, and the cup point grips like a dream. Alloy steel feels solid enough to trust under vibration.