MS3126F22-55SY is a miniature cylindrical straight plug connector from the PT-SE series, designed for crimp contact termination with bayonet coupling. This connector features a shell size 22 with crimp contacts and is available with strain relief clamp (F designation) for moisture-proofing individual wires and added wire bundle support. The connector complies with MIL-DTL-26482, Series 1 specifications and is manufactured by Amphenol Industrial Operations. It is commonly used in military, aerospace, and industrial applications where reliable, compact electrical connections are required in harsh environments.