M4-0.7 x 45mm 內六角螺絲 | 六角驅動 | 部分螺紋 | 18/8 不鏽鋼 (400顆/包)

Been using these for fixture builds in my shop and the 18/8 stainless is holding up great in the oily environment. The partial thread on the 45mm length gives just the right grip when I need to clamp two plates together without bottoming out.

The hex socket drive sits deep and clean, so my Allen key grips perfectly without any stripping even on the 18/8 stainless. I used them to rebuild a small jig and the partial threading held alignment just right. Solid value for a bulk pack of 400.

I’m a machinist and these 45mm lengths finally saved me from having to stack washers on shorter bolts for my jigs. The 18/8 stainless feels solid and the hex socket drives clean without stripping, even after a few reuses.