The Attenuator,variable, cataloged under National Stock Number 5985-01-069-5299, 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 Caes Mission Systems Llc. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-069-5299 |
| Primary Part Number | 40L4 |
| Item Name | Attenuator,variable |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Caes Mission Systems Llc |
| Status | ACTIVE |
| Insertion Loss at Minimum Attenuation in Maximum Decibels | 0.8 |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| FSC Application Data | COUNTERMEASURES SET |
| Frequency Range | 1.000 GIGAHERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR |
| Overall Attenuation Range in Decibels | +0.0 TO 40.0 |
| Unthreaded Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Overall Attenuation Accuracy in Decibels | -5.00 TO 5.00 |
| Attenuation Variation Method | CONTINUOUS |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 1.240 INCHES NOMINAL IN |
| Operating Temp Range | -54.0 TO 75.0 CELSIUS DEGC |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.990 INCHES NOMINAL IN |
| Application Design | TRANSMISSION LINE |
| Power Rating | 1.0 WATTS AVERAGE |
| 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 |
|---|---|
| 40L4 PRIMARY | Caes Mission Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 174AS566 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 5985-01-069-5299 is a Attenuator,variable, manufactured by Caes Mission Systems Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-069-5299 has 1 manufacturer part number on file: 40L4 (Caes Mission Systems Llc).
Key specifications for 40L4: Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.8; Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); FSC Application Data: COUNTERMEASURES SET; Frequency Range: 1.000 GIGAHERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM. 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 5985-01-069-5299 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.