The 77311-401-12LF: Unshrouded means the 0.230" (5.84 mm) mating pins are fully exposed; the mating receptacle needs no keying but relies on the harness builder's alignment during assembly.
Tin-Plated Contacts and UL94 V-0 Housing
For a connector that mates once in production and stays, tin is the cost-effective call.
