The Attenuator,fixed, cataloged under National Stock Number 5985-00-681-3586, 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 Telephonics Corp/prd Instruments. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-681-3586 |
| Primary Part Number | 140E |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Telephonics Corp/prd Instruments |
| Status | ACTIVE |
| Waveguide Flange Type | COVER |
| Mounting Hole/stud Quantity | 4 |
| Frequency Range | 8.200 GIGAHERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM |
| Inside Width | 0.500 INCHES NOMINAL IN |
| Body Style | RECTANGULAR, TERMINAL/TERMINALS ON OPPOSITE SURFACES |
| Voltage Standing Wave Ratio | 1.00 AND 1.15 |
| Waveguide Flange Designation | UG-39/U |
| Mounting Method | TERMINAL WITH MOUNTING HOLES |
| Rf Signal Attenuation in Decibels | 30.0 |
| Attenuation Accuracy in Decibels | -0.30 TO 0.30 |
| Unthreaded Mounting Hole Diameter | 0.169 INCHES NOMINAL IN |
| Center to Center Distance Between Mounting Facilities Parallel to Height | 1.280 INCHES NOMINAL IN |
| Surface Treatment | COPPER AND CADMIUM BODY |
| Voltage Standing Wave Ratio Frequency Range | +8.2 TO 12.4 GIGAHERTZ |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 1.220 INCHES NOMINAL IN |
| Application Design | WAVEGUIDE |
| Material | ALUMINUM BODY |
| Inside Height | 1.000 INCHES NOMINAL IN |
| Power Rating | 1.0 WATTS AVERAGE |
| Terminal Type and Quantity | 2 FLANGE |
| 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 |
|---|---|
| 140E PRIMARY | Telephonics Corp/prd Instruments (USA) |
| Reference | Meaning |
|---|---|
| 140E | 5/9 Secondary reference Peraton Inc |
NSN 5985-00-681-3586 is a Attenuator,fixed, manufactured by Telephonics Corp/prd Instruments, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-681-3586 has 1 manufacturer part number on file: 140E (Telephonics Corp/prd Instruments).
1 possible match (shared part number, not a government interchangeability claim): 3825-01-059-4488. Verify interchangeability with system specifications before substitution.
Key specifications for 140E: Waveguide Flange Type: COVER; Overall Height: 1.625 INCHES NOMINAL IN; Mounting Hole/stud Quantity: 4; Frequency Range: 8.200 GIGAHERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM. 20 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 5985-00-681-3586 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.