HarnessCore Assemblies Get a same-day quote

Custom, tested M8/M12 cordsets &
control-cabinet wire kits — quick turn.

Exact lengths, specific coding and pinout, labeled, and 100% electrically tested with a test record and lot traceability. Low minimums. The odd lengths, shielded variants, and configurations catalog vendors won't touch at your quantities.

Low minimums Same-day quotes 100% continuity/pinout tested Lot traceability Made in the USA
Send a spec or photo →
Custom M12 A-coded cordset with labeled, ferruled flying leads — 100% continuity and pinout tested

What we build

M8 / M12 cordsets

Sensor, actuator & IO-Link cordsets — A/D/X-coded, straight or right-angle, single- or double-ended, shielded or unshielded, in PUR or PVC.

Control-cabinet wire kits

Pre-cut, stripped, ferruled, and labeled wire kitted by terminal block or install step, so panels build in sequence instead of at the bench.

Industrial Ethernet

M12 D-coded (100 Mbit) and X-coded (10 Gbit) links in exact lengths, shielded and tested for the environment.

Harnesses & high-flex

Robot dress packs, end-of-arm and drag-chain high-flex harnesses, servo/motion and encoder cable sets, washdown-rated builds.

Why HarnessCore Assemblies

Quoting throughputSend a drawing, spec, or even a phone photo — usually a quote back the same day.
Low MOQ, high mixBuilt for small batches, revisions, and one-offs, not commodity volume.
Tested & documented100% continuity/pinout test, test record, and lot traceability on every shipment.
US-madeShort domestic supply chain and quick turn — no offshore lead times.

M8 / M12 connector coding — send us any of these

Not sure which coding you need? Send a photo and we'll identify it. We build across the full range:

M12 connector coding reference: A-code sensors/actuators, B-code fieldbus, D-code 100 Mbit Ethernet, X-code 10 Gbit Ethernet, T/L-code DC power, with common pin counts

Request a quote

Five quick fields and we'll get you a number — usually the same business day. Not sure of a detail? Leave it blank or write "advise" and we'll ask the right question back.

We'll get back to you from sales@harnesscoreassemblies.com — usually the same business day. Prefer email? Write us directly at sales@harnesscoreassemblies.com.