AntonioK Asked: 2017-12-06 07:02:39 +0800 CST2017-12-06 07:02:39 +0800 CST 2017-12-06 07:02:39 +0800 CST What is the correct engineering name for HDD screw thread? 772 Everyone who deal with PC and servers assembling knows how does the screw to connect HDD with chassis (tray) looks like. But how to name it correctly? Is it M3.5 screw or what? hardware 1 Answers Voted Zac67 2017-12-06T11:08:46+08:002017-12-06T11:08:46+08:00 3.5" HDDs use non-metric, UTS screws: #6-32 UNC. They have #6 diameter (.138") with 32 tpi (coarse) thread. 2.5" HDDs use metric M3 screws.
3.5" HDDs use non-metric, UTS screws: #6-32 UNC. They have #6 diameter (.138") with 32 tpi (coarse) thread.
2.5" HDDs use metric M3 screws.