NUT PLATE MS3470 SHELL SIZE 22

Description

M85049/95-22A Nut Plate for MS3470 Shell Size 22 — Mil-Spec Connector Panel Mounting Hardware

The M85049/95-22A is a nut plate for MS3470 series flanged receptacle connectors in shell size 22, designed for panel or bulkhead mounting of the MS3470 circular mil-spec connector. The nut plate provides the threaded interface that retains the MS3470 flange-mount receptacle against a panel face from the rear, securing the connector body in the panel cutout so that mating and unmating forces are transferred to the panel structure rather than to the harness wiring. This nut plate suits maximum-density large harness bulkhead connectors and primary ECU connectors.

What Is a Nut Plate and Why Is It Required?

MS3470 flanged receptacles are designed for through-panel or through-bulkhead mounting, where the connector flange sits on one face of the panel and the nut plate threads onto the connector body from the opposite side to clamp the connector firmly in position. Without the nut plate, the connector can rotate in the panel cutout, making mating difficult, and can be pulled out of the panel when the mating plug is forcibly removed — which is a common failure mode in motorsport applications where connectors are disconnected under race schedule time pressure. The nut plate provides the mechanical retention that keeps the receptacle in its correct orientation and panel position throughout the vehicle’s racing life.

Shell Size 22 — Connector Compatibility

The M85049/95-22A nut plate is specifically sized for MS3470 shell size 22 connectors. Nut plates are not interchangeable between shell sizes — a size 22 nut plate will not fit a different shell size. Shell size 22 connectors are used for maximum-density large harness bulkhead connectors and primary ECU connectors. Always verify the shell size of the installed MS3470 receptacle before ordering the nut plate.

Installation

The nut plate is installed from the rear of the panel after the MS3470 receptacle is inserted from the front through the panel cutout. The nut plate threads onto the connector body’s threaded interface and is tightened to clamp the connector flange firmly against the panel face. Torque to the connector manufacturer’s specification — over-tightening can damage the connector body threads, while under-tightening allows the connector to rotate and work loose over time under vibration.

Available from Arctic Performance Parts

Arctic Performance Parts stocks M85049/95 nut plates for MS3470 connectors across all shell sizes from 8 to 24, supporting professional motorsport harness builders and race car fabricators across Norway, Sweden, and Denmark. Lead time 1–2 weeks for quantities beyond current stock.