3/4-16 X 1/2" 杯頭止付螺絲 | 合金鋼 (25個/包)

Set screws this hard are hard to come by—that cup point bit down into the shaft without stripping, and the alloy steel held up to my torque wrench without a hint of give. For a 25-pack at this price, they're a solid buy for anyone doing heavy machine work.

I needed set screws that could handle a really tight fit in a confined space, and these alloy steel ones with the cup point tip bit in perfectly without stripping.

The hex socket drive is what sold me—tightening these in a cramped gear housing was way easier than fumbling with a slotted screwdriver. The cup point bites down hard on the shaft, and all 25 threaded in clean without any galling.