M14-2 x 30mm 內六角螺絲 | 內六角驅動 | 全螺紋 | 12.9級合金鋼 鍍鋅 (50個/包)

The hex socket drive seated perfectly on my Allen key, no wobble or stripped edges even after torquing them down hard on a jig fixture. Zinc plating looks uniform across all 50 pieces, and the 12.9 grade alloy steel feels reassuringly solid for the precision assembly I’m doing.

Pulling these out of the package, the hex socket drive fit perfectly with my Allen key, and the zinc plating seems like it’ll resist rust well on my tooling jigs. They threaded smoothly into the fixture without binding or cross-threading.

Installed these in a jig fixture yesterday and the hex sockets grabbed the wrench perfectly without any stripping. Class 12.9 strength gives me confidence these will hold up under heavy clamping loads.