The Attenuator,variable, cataloged under National Stock Number 5985-01-172-3164, 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 Aimtron Systems, Llc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-172-3164 |
| Primary Part Number | 404930 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Aimtron Systems, Llc |
| Status | ACTIVE |
| Bushing Length | 0.031 INCHES NOMINAL IN |
| Mounting Facility Type and Quantity | 2 BRACKET(S) |
| Body Style | RECTANGULAR, TERMINALS ON ONE SURFACE |
| Mounting Facility Pattern | TWO POSITION IN-LINE |
| Adjustment Device Type and Quantity | 1 ELECTRONIC, PROGRAMMABLE |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 7.625 INCHES NOMINAL IN |
| Overall Attenuation Range in Decibels | +0.5 TO 64.0 |
| Attenuation Variation Method | CONTINUOUS |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 1.573 INCHES NOMINAL IN |
| Distance Between Mounting Facility Centers | 7.500 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 0.750 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN |
| Application Design | TRANSMISSION LINE |
| Terminal Type and Quantity | 2 CONNECTOR, COAXIAL, FEMALE AND 1 CONNECTOR, RECEPTACLE |
| Coaxial Connector Series Designation | SMA |
| 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 |
|---|---|
| 3290-67-0.25-1 | General Microwave Corporation Div Kratos Microwave Electronics (USA) |
| 404930 PRIMARY | Aimtron Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 404930 | 5/9 Secondary reference Cardion Inc |
NSN 5985-01-172-3164 is a Attenuator,variable, manufactured by Aimtron Systems, Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-172-3164 has 2 manufacturer part numbers on file: 3290-67-0.25-1 (General Microwave Corporation Div Kratos Microwave Electronics), 404930 (Aimtron Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 2510-01-617-9486. Verify interchangeability with system specifications before substitution.
Key specifications for 404930: Bushing Length: 0.031 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 2 BRACKET(S); Overall Height: 0.250 INCHES NOMINAL IN; Body Style: RECTANGULAR, TERMINALS ON ONE SURFACE. 14 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 5985-01-172-3164 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.