M12 x 25mm 內六角肩螺絲 | 內六角頭 | 內六角驅動 | 合金鋼 (25個/包)

The ground shoulder on these is dead-on accurate—everything spun true without any wobble when I used them as axles in a jig. Alloy steel feels solid, and the socket drive seated my hex key snug from the get-go. Exactly what I needed for bearing surfaces.

Used these as pivot points for a custom jig and the hex socket drive made installation a breeze. The alloy steel feels really solid—no flex at all under heavy load. Got exactly 25 in the pack, all perfectly machined.

Used one as a pivot in a custom jig, and the precision-ground shoulder made the rotation feel incredibly smooth. The socket drive also gripped without any rounding, even at decent torque. Definitely solid hardware for this kind of work.