High‑strength aluminium‑alloy housing with anti‑oxidation nickel‑plated coating for tough‑environment usage
Three‑thread bayonet quick‑lock design for fast assembly and anti‑loosening performance
Gold‑plated copper contacts with outstanding electrical conductivity for stable power and signal delivery
IP67‑level sealed‑structure for dust‑proof and water‑proof capacity
Broad working‑temperature range from ‑55℃ to +175℃, resistant to vibration and mechanical shock
Detachable independent contacts, matched with special extracting tool for convenient maintenance
Knurled anti‑slip outer‑shell for effortless manual plug‑and‑unplug
In‑house full‑chain production from CNC machining, mould‑making to finished‑product assembly
Multi‑item factory inspection to ensure stable quality and long‑time service lifespan
D38999/26WC04PA heavy‑duty 4‑position circular male receptacle connector. The accessory set contains detachable gold‑plated pin contacts, dedicated plastic contact‑removal tool and sealed storage bottle for spare terminals. The insulating insert is printed with position marks for easy‑to‑recognize wiring layout. The knurled anti‑slip aluminium‑alloy shell adopts anti‑corrosion nickel‑plated finish and locating ring. All finished connectors pass strict conductivity, insulation, vibration and impact testing before shipment.


Our factory completes the full manufacturing process including CNC precision machining, mold customization, contact stamping‑forming, assembly and multi‑round quality inspection, to guarantee consistent batch quality and long‑term service life.


We run a full-chain manufacturing plant dedicated to all kinds of industrial connector goods. Every single component you see on our finished items gets crafted righ-t on-site by our own workshop crews.
Our in-house workshops handle CNC turning for metal connector shells. We ve got a small, skilled mould-making team that works on custom tooling design. A big collection of finished mould templates is stored onsite, which helps us churn out insulating parts and silicone rubber accessories. All the core mechanical pieces contact springs, mating ports and anti-interference shield springs are produced locally within our factory space.
We built dedicated working stations to stamp and shape our metal contact terninals. Every terninal piece is made to satisfy the requirements laid down in the internat-ional M39029 industry standard. When our factory first got off the ground, most of our manufactured parts went to supply the AVIC Group.
Our long-time assembly workers carry out careful inspections during every production stage. They make certain every finished-off connector meets the strict criteria of the MIL-DTL-38999 military-grade specification.



Great client service is something our team always prioritizes. We aim to deliver a pleasant buying journey for every overseas partner. We make regular trips to major electronics trade fairs around the industry. These in‑person meet‑ups make it simple for us to chat with buyers, gather real‑world usage feedback and work out ways to refine our goods. Face‑to‑face conversations like these allow us to build dependable, long‑lasting business partnerships with clients all over the world.

Wondering how we pack connectors before shipment? Let me walk you through our real packing routine step by step.
First off, every unit gets wrapped with soft tough anti-scratch foam right before leaving our workshop. Rough highway and sea shipping always bring bumps and friction, and this foam keeps metal shells free of ugly scratches that often come from poor packaging.
After foam wrapping, we place each connector into a separate ESD sealed box. These internal pins and inserts are extremely delicate; static electricity can burn out tiny parts without visible signs. This sealed box blocks static risk entirely, and it’s one of our most important protective steps.
Our packing team will double-check every finished package manually. Only confirmed good items go into reinforced dedicated cartons. We print part number, batch count and total quantity clearly on carton surfaces, so your warehouse team can sort and stock goods quickly once delivery arrives.
You can pick international express, air freight or sea shipping freely. Our logistics team adjusts arrangements fully to match your preferred delivery method.
All outer cartons go through extra reinforcement work. They resist compression and shock far better than ordinary generic cartons.
Long cross-border shipments always have shaking and squeezing on the way. Our layered packing design absorbs most impact, cuts transit damage greatly, and makes sure every single connector lands intact at your site.


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 wllundergo individual quality inspection and then be packaged and shipped.
1.Who are we?
We are based in Henan, China, start from 2019,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.What certifications do your products have?
Our products have passed the tests of national key laboratories, and the test reports have CNAS and CMA certifications, which are mutually recognized globally.
3.How is the reliability of your products?
Our products have passed strict vibration, temperature shock and torque tests, and their performance is comparable to that of European and American original brands, which can ensure long-term stable operation.