What is the primary use for the small screw pin clevis?

The small screw pin clevis is primarily used as a tie down or lift point due to its design, which allows it to securely attach to various equipment or load-bearing items. Its threaded pin can be screwed in to keep items firmly connected, ensuring stability during lifting or securing operations. This versatility makes it a crucial component in various tactical and logistical scenarios, as it can easily connect with shackles or hooks, allowing for efficient load management and safe transportation of gear.

The other functions suggested by the other options are not aligned with the typical functionality of a screw pin clevis. For instance, it is not designed to measure weight or regulate flow, nor is it primarily built for emergency releases. Each of these roles requires mechanisms that differ significantly from those of a clevis, which is optimized for connection and support.