The Adapter,antenna to Antenna Base, cataloged under National Stock Number 5985-00-992-8349, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Thales Usa, Inc. Div Air Mobility Solutions ("ams"). Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-992-8349 |
| Primary Part Number | 77639-3 |
| Item Name | Adapter,antenna to Antenna Base |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Thales Usa, Inc. Div Air Mobility Solutions ("ams") |
| Status | ACTIVE |
| Overall Diameter | 4.490 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-601, ALLOY 356, T6 FED SPEC 1ST MATERIAL RESPONSE |
| Material | ALUMINUM ALLOY 356.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 77639-3 PRIMARY | Thales Usa, Inc. Div Air Mobility Solutions ("ams") (USA) |
NSN 5985-00-992-8349 is a Adapter,antenna to Antenna Base, manufactured by Thales Usa, Inc. Div Air Mobility Solutions ("ams"), classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-992-8349 has 1 manufacturer part number on file: 77639-3 (Thales Usa, Inc. Div Air Mobility Solutions ("ams")).
2 possible matches (shared part number, not a government interchangeability claim): 6150-01-339-5822, 6150-01-479-8378. Verify interchangeability with system specifications before substitution.
Key specifications for 77639-3: Overall Diameter: 4.490 INCHES NOMINAL IN; Material Document and Classification: QQ-A-601, ALLOY 356, T6 FED SPEC 1ST MATERIAL RESPONSE; Overall Length: 1.790 INCHES NOMINAL IN; Special Features: HAS A FILE MARK 0.06 IN. W 0.06 IN. DP FULL WD OF SHOULDER; HAS FOUR EQUALLY SPACED HOLES 4-40 UNC-2B,0.31 IN. MIN DP ON 1.458 IN. DIA BOLT CIRCLE AND EIGHT EQUALLY SPACED DRILLED HOLES 0.281 IN. DIA,0.625 IN. DIA SPOTFACE,ON 3.406 IN. DIA BOLT CIRCLE; MICROINCH FINISH 64AA IN. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-00-992-8349 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.