M4 X 20mm براغي ضبط ذات نقطة مسطحة | سبائك الصلب (500 / عبوة)

Used a handful of these for securing a pulley on a small shaft, and the flat point holds tight without marring the surface. The hex socket drive made tightening them in a cramped spot much easier than I expected.

Had to adjust a few set screws on a jig and these M4x20 flat points grabbed perfectly in the recessed hex slot. The alloy steel feels solid enough for repeated use.

Threaded these into a tight bracket on my 3D printer carriage and the hex socket drive grabbed perfectly with no slipping. The flat point seated flush against the surface, exactly what I needed for precise adjustment.