9/16-18 x 6" 소켓 캡 나사 | 육각 소켓 드라이브 | 전체 나사산 | 합금강 열처리 블랙 옥사이드 (10 / 팩)

I needed a set of long- reach cap screws for a custom fixture build, and the 9/16-18 thread fit perfectly into tapped holes without any binding. The black oxide finish gave them a nice, uniform look and seems to add a bit of corrosion resistance.

Used these to bolt a jig table together and the threads cut clean with zero binding, even at six inches long. The black oxide finish held up fine against a little coolant splatter, no surface rust after a week of use.

Had to replace some worn bolts on an old press jig and these fit perfectly with the hex socket drive. All six inches of thread let me get the full bite I needed into the nut plate.