Deutsch Autosport AS022 — 21-Way Flange Socket (Female) — Yellow Key (A)
The Deutsch Autosport 21-Way Flange Socket (Female) Connector — Yellow Key (A) — SKU: AS022-21SA is a genuine MIL-spec-grade Deutsch Autosport AS series panel-mounted connector built for 21-circuit high-density ECU and PDM sub-harness separation points in professional race cars, hillclimb, rally, and high-performance builds across Norway, Sweden, and Denmark. Configured as a flange-mount (panel/bulkhead) separable join, this connector is fixed to a chassis panel, firewall, or bulkhead surface via its integral mounting flange — delivering a clean, reliable, mechanically keyed separable interface at the harness separation point.
AS022 Shell — Series Architecture and Circuit Density
The AS022 is a very large circular flange-mount shell offering circuit counts from 21 to 100 ways — delivering the highest circuit consolidation per flange-mount connector pair across the full AS series. The AS022 is used for absolute maximum circuit density at a single bulkhead separation point, combining MIL-spec aluminium alloy construction, gold-plated contacts, and positive push-pull locking in a large circular panel-mount body. The 21-circuit configuration in the AS022 shell is suited to 21-circuit high-density ECU and PDM sub-harness separation points. Typical applications at this circuit count include ECU auxiliary harness separation joins carrying 21 channels, PDM output sub-harness splits, combined power and signal distribution separation points, and high-density vehicle control bus interfaces. The 21-way flange is a specialised high-density circuit count found in the AS022 shell for complex ECU and PDM harness loom designs.
Socket (Female) — 21-Circuit Contact Array
This listing supplies the socket half of the 21-way AS flange connector pair — gold-plated socket contacts 21 in total — receiving the incoming pin contacts from the mating half and completing each circuit across the flange-mount (panel/bulkhead) separation point. To form a complete functional connector pair, the matching Pin (Male) half of the same circuit count, shell size, and key colour must be ordered separately; both halves are required to create a mated, functional separable join. AS series contacts are ordered independently of the connector shells — select the correct contact part number for your wire gauge, current rating, and preferred termination method.
Yellow Key (A) — Keying Position and Mis-Mate Protection
Yellow A is the universally recognised first key assignment in the Deutsch Autosport AS system. Whenever a harness design calls for 21-circuit AS flange connectors, Yellow A is assigned to the primary bundle first — the one most frequently separated and reconnected during race preparation, pre-event checks, and post-event servicing. Where only one 21-circuit AS flange pair exists at a separation point, Yellow A is the correct and conventional choice. Where multiple 21-circuit AS flange pairs share the same separation point, Yellow A identifies the lead bundle — making harness documentation, build consistency, and event-day reconnection straightforward for mechanics across multiple cars and builds. Motorsport wiring specialists and race car builders across Norway, Sweden, and Denmark standardise on Yellow A as the first or sole key at any 21-circuit AS flange separation point, ensuring consistent harness conventions from build to build.
Flange Configuration — Panel and Bulkhead Mounting
The AS flange connector mounts through a panel cutout using its integral aluminium mounting flange — fixing one half of the connector pair permanently to the chassis, firewall, or bulkhead surface. The mating free half (the cable-mounted opposite half) plugs directly into the panel-mounted half, creating a secure separable interface at the bulkhead itself. This configuration is used wherever the harness must separate cleanly at a fixed chassis point — engine bay to cabin firewall, removable subframe to chassis, fuel cell bay to main loom, or any other fixed panel location where one side of the harness needs a permanent, precision-located connection point. Flange connectors are the professional standard for primary chassis separation points in full race car loom builds. Flange-mount AS connectors are the standard choice for primary chassis and bulkhead separation points on race cars and high-performance vehicles built and maintained by loom specialists and motorsport workshops across Norway, Sweden, and Denmark.
Technical Specifications — AS022-21SA
- Series: Deutsch Autosport AS
- Shell size: AS022
- Circuit count: 21-way
- Configuration: Flange (flange-mount (panel/bulkhead))
- Contact type: Socket (Female)
- Key colour: Yellow (Key A)
- Shell material: Aluminium alloy, MIL-spec machined
- Contact plating: Gold over nickel
- Operating temperature: −65°C to +175°C
- Locking mechanism: Push-pull positive lock collar
- Contacts: Ordered separately — not included
- Mating half required: Pin (Male), same circuit count, shell size, and key colour
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