M12-1.75 x 20mm 低頭內六角圓柱頭螺絲 | 六角驅動 | 全螺紋 | 合金鋼 8.8 級（400 入/包）

Needed some low-profile cap screws for a tight clearance on a hydraulic manifold, and these 20mm length M12s fit the bill perfectly. The hex socket drive engaged cleanly without stripping, and the Class 8.8 alloy steel feels solid enough for repeated torquing.

Installing these on a jig fixture this morning and the hex socket drive gripped perfectly without any stripping. The low head profile saved me a few millimeters of clearance, which was exactly what I needed.

I needed a batch of M12 fasteners for a jig I was building, and these 20mm ones fit the bill perfectly. The hex socket drive made installation straightforward without any cam-out issues.