Custom wire harnesses & cable assemblies, made in the USA.
Scale Atoms is a custom wire harness manufacturer in San Francisco, California — no minimum order quantity, rapid prototyping, IPC/WHMA-A-620 quality, shipped in days, not months.
01 — ABOUT OUR WIRE HARNESS COMPANY
Hardware teams can design a robot in weeks. Then they wait months for the cables that make it move.
Traditional harness suppliers quote in weeks, demand thousand-unit minimums, and treat a prototype like a nuisance. The result: the least glamorous part becomes the longest lead time on the build.
Scale Atoms was built to remove that bottleneck. One harness or one thousand — quoted fast, built to spec, tested, and on your bench while the idea is still warm.
02 — WIRE HARNESS & CABLE ASSEMBLY CAPABILITIES
Custom wire harness assembly
Multi-branch harnesses from your drawing, netlist, or a photo of the old one. Crimped, terminated, sleeved, labeled.
Custom cable assemblies
Point-to-point, shielded, and overmolded cable assemblies for power, signal, and data — electronics, automotive, and industrial applications.
Prototype & low-volume runs
Rapid wire harness prototyping with no minimum order quantity. Quantity one is a real order, with the same process and inspection as production.
03 — INDUSTRIES WE SERVE
Robotics
Robot wire harnesses: actuator looms, sensor pigtails, e-stop chains.Aerospace & Defense
Mil-spec wiring, traceable materials, serialized builds, documentation on request.Industrial Equipment
Panel wiring, motor leads, industrial wire harnesses for machines that run 24/7.Automotive & EV
Automotive wiring harnesses, EV battery interconnects, HV/LV assemblies, CAN networks.Medical Devices
Medical cable assemblies: small-gauge precision builds with full lot traceability.04 — WIRE HARNESS FAQ
What is the minimum order quantity for a custom wire harness?
There is no minimum order quantity. Quantity one is a real order, built with the same process and inspection as a production run.
How fast can you build a wire harness prototype?
Rapid-turn prototypes ship in as little as 5 business days. Standard lead time is 10–20 business days.
What quality standard are your wire harnesses built to?
Every harness and cable assembly is built to IPC/WHMA-A-620 and 100% continuity tested before it ships.
Are your wire harnesses made in the USA?
Yes. Every harness is manufactured at our facility at 2209 Van Ness Ave, San Francisco, California — no offshore subcontracting.
What do you need to quote a custom cable assembly?
A drawing, a netlist, or even a photo of the old harness. Quotes go back the same day.
Which connector families do you work with?
JST, Molex, TE Connectivity, Deutsch, Amphenol, and most industry-standard connector families.
05 — REQUEST A QUOTE
Send a drawing, a netlist, or a photo. Get a wire harness quote back the same day.