M6 X 40mm 六角凹頭螺絲 | 六角驅動 | 合金鋼 (200 個/包)

Installing these into some jig fixtures was a breeze—the hex socket drive really lets you torque them down without stripping. The 40mm length gave just the right grip depth for my aluminum plate. A solid batch for repeatable clamping pressure.

These are exactly what I needed for a jig I’m building—the 40mm length gives plenty of grip, and the hex socket drive made tightening them in tight spots a breeze. The alloy steel feels solid, not flimsy like some cheaper packs I’ve tried.

The hex socket drive seated perfectly on my Allen key with zero wobble, and the alloy steel feels dense and solid when torquing down. Sorted out a stubborn machine guard in under ten minutes, and the 40mm length gave just enough thread bite for the bracketry.