1/4-20 X 3-1/4" 六角機械螺絲 | 18/8 不鏽鋼 | 部分螺紋 (50 個/包)

I needed a proper grip length for a metal frame I was assembling, and these 3-1/4" bolts fit perfectly through heavy tubing without the threads binding halfway. The 18/8 stainless should resist rust well outdoors.

The partially threaded shank on these bolts made aligning everything much easier, since the unthreaded grip section held the joint steady before I torqued them down. They're solid 18/8 stainless, so no worries about rust on my outdoor gate project. Pack of 50 is plenty for a few jobs.

The threads are clean and the stainless steel feels solid enough for my outdoor project. They did the job, but the partial thread on a few bolts was slightly shorter than the spec I needed, so I had to swap some out.