What sealing technology do you use?

Glass-to-metal sealing creates a robust hermetic barrier. We align leak testing, inspection, and documentation with each program’s requirements.

Can BoldX be a second source for an existing connector program?

Yes. We can evaluate second-source opportunities alongside established QPL suppliers while respecting your qualification, procurement, and documentation controls.

Do you support custom or build-to-print hermetic work?

Yes. Share the drawing or model, specification, quantities, and performance requirements for an engineering review and quote.

How do we start an RFQ?

Send your drawing or model, material and electrical requirements, quantities, and quality documentation needs. We will review the scope and provide a clear capability assessment.

MIL-DTL-38999 Hermetic Connectors. Built to Spec.

U.S.-made MIL-DTL-38999 Series I–III hermetic connectors with glass-to-metal seals for aerospace and defense.

Built for Sealed Reliability

Hermetic performance, controlled manufacturing, and a clear path from drawing to delivered connector.

Why BoldX

Machining and hermetic connector manufacturing under one roof means fewer handoffs between precision components, glass-to-metal sealing, inspection, and documentation. We support build-to-print programs and second-source evaluations with practical engineering feedback.

Series I–III at a glance

MIL-DTL-38999 Series I connectors offer threaded coupling for rugged applications; Series II uses bayonet coupling for fast, secure mating; Series III provides triple-start threaded coupling with high-density layouts and strong vibration resistance. Hermetic variants use glass-to-metal seals to protect systems from moisture, pressure, and harsh environments.

Application fit

Aerospace, defense, space, and other critical systems may require qualification, material control, electrical testing, leak testing, and traceability. We review the drawing, applicable specification, quantities, and documentation requirements before quoting.

Catalog and configuration

If you have a preferred configuration or catalog reference, include it with your RFQ. We can help confirm series, shell style, contact arrangement, finish, keying, and sealing requirements.

FAQS

Yes. BoldX supports U.S.-made MIL-DTL-38999 Series I–III hermetic connector requirements and can review build-to-print scope, quantities, and documentation needs.