21 x #20 · Socket (Female) · Shell 23 · Insert 23-21 · Class W · Scoop-proof triple-start threaded coupling
D38999/20WH21SN
MIL-DTL-38999 Series III (SAE AS38999)
20 — Receptacle, Wall Mount Flange
23 (23 shell code)
23-21 (MIL-STD-1560)
21 x #20
Socket (Female)
22D / 20 / 16 mixed
5 A (#22D), 7.5 A (#20), 13 A (#16)
Crimp, rear release (front-release on hermetic styles)
W — environment resisting, cadmium olive drab over electroless nickel
Scoop-proof, triple-start self-locking threaded
N — normal; alternate keys A, B, C, D available
Aluminium alloy, conductive or non-conductive finish
-65 °C to +200 °C
10-2000 Hz, 20 g peak; 40 g on request
300 g, 3 ms per MIL-STD-1344 method 2004
500 h (class W cadmium olive drab)
500
MIL-DTL-38999 fluid immersion tests (JP-5, hydraulic, de-icing)
5,000 MΩ at 500 VDC
≥ 90 dB at 100 MHz to 1 GHz (conductive classes)
J599 equivalent — J599/20WH21SN
Amphenol TV/CTV, Souriau 8D/DTS, Glenair 233, Eaton/Deutsch
4 weeks standard; free samples on request
| Parameter | Equivalent / alternate source |
|---|---|
| Airoadcon equivalent | J599 20WH21SN |
| Amphenol | TV20W-23-21 |
| Souriau | 8D20W23-21 |
| Glenair | 233-20W23-21 |
| TE / Deutsch | DTS20W23-21 |
D38999/20WH21SN is a MIL-DTL-38999 Series III connector — the scoop-proof, triple-start threaded-coupling family that has become the default circular interface for avionics, ground vehicles, marine and deployable systems. Shell size 23 on arrangement 23-21 provides 21 x #20. The 'N' suffix denotes normal polarisation; alternate keys A-D rotate the insert so two adjacent connectors on the same rack cannot be cross-mated. Class W sets the finish and therefore the salt-spray and conductivity performance. Airoadcon ships the form-fit-function equivalent, including the cross-brand J599 build, with sample quantities for qualification testing.
Need D38999/20WH21SN?
Cross-brand compatible. Free samples available. 4-week lead time on standard configurations. Email: info@airoadcon.com | Phone: +86-189-9192-7716
Request Quote / Sample