
MIL-DTL-38999 Series I, II, III, and IV Family of Hermetic Connectors
Glass-to-Metal Seal D38999 Hermetics
The MIL-DTL-38999 Series I, II, III, and IV family of hermetic connectors are ideal for high-pressure/low-leakage applications in air, sea and space environments. Glenair is on the Qualified Product List (QPL) for all configurations of MIL-DTL-38999 Series I through IV pin and socket hermetic connectors. We also offer our D38999 type commercial part numbers for applications that do not require MS qualified products. And because Glenair makes all its hermetic connectors in-house, including the machining of shells, molding of interfacial seals and firing of hermetic components, we can offer you outstanding availability on stock products and fast turnaround on special orders.
Reference
- Quick Selection Guide
- Insert Arrangements (IAW MIL-STD-1560)
- Layouts and Pin Counts
- Material Specifications
- Connector Performance Specifications
- Contact Materials and Performance Specifications
- Recommended Torque Values
- Connectors and Environmental Mates
Alternate Keyway Positions
Product Datasheets
Related Catalog
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- D38999 Series I Type Hermetic
- D38999 Series II Type Hermetic
- D38999 Series III Type Hermetic
- D38999 Series IV Type Hermetic
D38999 Series I Type Hermetic
- MIL-DTL-38999 Series I Type

SuperNine D38999 Series I Type Connectors and Cables
The Advanced-Performance MIL-DTL-38999 Series I Type Bayonet-Lock Connector
D38999 Series I Type Hermetic
- MIL-DTL-38999 Series I Type
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231-103-H7
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231-103-H9
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D38999 Series II Type Hermetic
- MIL-DTL-38999 Series II Type
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MS27475
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MS27476
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MS27477
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MS27478
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232-101-H7
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232-103-H7
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232-103-H9
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232-100
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232-106
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Hermetic Connectors, Glass-to-Metal, and CODE RED Encapsulant-to Metal Sealing – SuperNine® Advanced Performance MIL-DTL-38999 Series III Type
Box, Wall, and Solder Mount Glass-Seal Hermetics for High-Pressure/Low-Leak Applications — Plus Special Crimp Contact and Lightweight CODE RED Hermetic Solutions all IAW MIL-DTL-38999 Series III and Series I Types
D38999 Series III Type Hermetic
- MIL-DTL-38999 Series III Type
D38999 Series IV Type Hermetic
- MIL-DTL-38999 Series IV Type

SuperNine D38999 Series IV Type Connectors and Cables
From Vertical Launch Fire-Control, Tracking, and Multi-Target Missile Systems to Rugged Industrial Applications, Glenair "Better-than-QPL" SuperNine and DLA-Qualified D38999 Series IV Connectors are the Ultimate Solution for Positive and Reliable Breech-Locking Performance