1/4-20 X 1" 機械螺絲 | 圓頭開槽驅動 | 鋼鍍鋅 (600個/包)

Packed a full enclosure project with just one bag—the truss heads sit flush and the zinc finish held up fine against a little moisture. No stripped threads or bent shafts across the whole batch.

Finally got around to mounting some panels in my workshop, and the truss heads sit flush without chewing up the surface. The zinc finish on these is consistent across all six hundred, which saved me from picking through a box for rejects. Exactly what I needed for enclosure work.

Picked up a box of these for a metal enclosure project and the truss head sits perfectly flush without splitting the thin sheet. The zinc finish seems solid so far, no rust after a few days in a damp garage.