Product pictures
These real‑shot product photos show the D38999/20WB04SB industrial circular connector. The full set includes a square flange‑mount connector body, a sealed plastic bottle containing 4 matching contact pins, and a red‑orange professional assembly‑extraction tool. The images clearly display the four‑hole mounting flange, letter‑marked insulating insert and all complete supporting accessories.


Product description
D38999/20WB04SB is a 4‑contact heavy‑duty flange‑mount industrial circular connector. It adopts high‑strength metal housing and stable threaded‑locking structure. With outstanding shock‑resistant, dust‑proof and moisture‑proof performance, it provides stable power supply and signal transmission for industrial automated equipment, new‑energy equipment and commercial transportation machinery.


Workshop
Our standardized production workshop completes the whole manufacturing workflow, covering precision metal machining, insulator injection molding, contact terminal stamping, component assembly and multiple rounds of electrical‑performance testing. Every finished‑goods connector goes through strict quality inspection to guarantee long‑term reliable operation.



Exhibition
We regularly attend international electronic‑component and industrial‑hardware exhibitions. We display our full‑series circular connectors, wiring fittings and maintenance tools, and build long‑term cooperative partnerships with overseas buyers.


Package
Each connector kit uses independent separate packaging. The matched contact pins are stored in a dedicated sealed plastic bottle. Anti‑static cushioning materials protect metal parts against scratches and static damage. The shock‑resistant outer package adapts to long‑distance sea and air transport. Customized packaging service is supported for bulk‑quantity orders.


| Type | Connector |
| Place of origin | Luoyang,China |
| Number of cores | Standard |
| Description | D38999 series III circular connector |
| Brand | Kewei |
| Date | 2026 |
Why choose us?
1. With its own molds, it can achieve large-scale production. The molds have been repeatedly finely engraved, ensuring the insulation structure and quality from the very beginning!
2. We have professional shell processing manufacturers. The shell materials and structures are completely consistent with Amphonel and fully comply with the MIL-DTL-38999 standard.
3. We have our own contact component production line. The quality of the contact components fully meets the M39029 standard!
4. Our workers have undergone strict training and produce according to the production process of standard connectors strictly.
5. After all products are assembled, each product will undergo individual quality inspection and then be packaged and shipped.
FAQ:
1. who are we?
We are based in Henan, China, start from 2025,sell to Mid East(50.00%),Domestic Market(30.00%),Southeast Asia(20.00%). There are total about 51-100 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
MIL-DTL-38999 Series connectors,militray connectors,Aorespace connectors,MS27484 series connector,Arinc 600 Series connectors
4. why should you buy from us not from other suppliers?
Our engineering team is come from AVIC, and we have a specialized R & D team for product development. With a wealth of ready - made molds, we can ensure large - scale production. To guarantee product quality, we have inspection equipment and a laboratory.
5. what services can we provide?
Accepted Delivery Terms: FOB,CIF,EXW,Express Delivery;
Accepted Payment Currency:null;
Accepted Payment Type: T/T,L/C,D/P D/A;
Language Spoken:English