M6 x 20mm 圓頭內六角螺絲 | 合金鋼 (100顆/包)

Installed a batch on a jig fixture and every single screw threaded in smoothly without any binding. The hex socket drive engaged perfectly with my driver, making the assembly quick.

The button head sits flush and the hex socket grabs tight without stripping, which made assembling my jig frame way less fiddly than with standard pan heads. All 100 came clean and uniform, no burrs or bent threads in the batch.

I needed some sturdy fasteners for my workshop jig, and these M6 button head screws fit perfectly into the countersunk holes without sticking up. The hex socket drive made them easy to torque down with my allen key, and the alloy steel feels solid.