The Attenuator,fixed, cataloged under National Stock Number 5985-00-103-1878, 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 Alan Industries Inc. 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-103-1878 |
| Primary Part Number | 75Z50-285 |
| Item Name | Attenuator,fixed |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Alan Industries Inc |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Frequency Range | 0.000 HERTZ MINIMUM AND 1.000 GIGAHERTZ MAXIMUM |
| Body Style | ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE |
| Overall Diameter | 0.578 INCHES NOMINAL IN |
| Input Impedance Rating in Ohms | 75.0 |
| Mounting Method | CONNECTOR |
| Surface Treatment | NICKEL BODY |
| Connection Type Per Function | FEMALE INPUT AND MALE OUTPUT |
| Application Design | TRANSMISSION LINE |
| Material | COPPER ALLOY BODY |
| Power Rating | 0.5 WATTS AVERAGE |
| Terminal Type and Quantity | 2 CONNECTOR |
| Output Impedance Rating in Ohms | 50.0 |
| Coaxial Connector Series Designation | BNC |
| 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 |
|---|---|
| 75Z50-285 | Alan Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 011-057 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 011-0057-00 | 5/2 Secondary reference U.S. Government activity |
| C4608-12 | 3/2 Design control — primary reference U.S. Government activity |
| 101916 | 5/9 Secondary reference Sierra Technologies Inc Garden City Div |
| A407CS | 5/9 Secondary reference Caes Systems Llc |
NSN 5985-00-103-1878 is a Attenuator,fixed, manufactured by Alan Industries Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-103-1878 has 1 manufacturer part number on file: 75Z50-285 (Alan Industries Inc).
7 possible matches (shared part number, not a government interchangeability claim): 5826-00-872-4230, 5998-01-015-2541, 4320-01-074-4945. Verify interchangeability with system specifications before substitution.
Key specifications for 75Z50-285: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Frequency Range: 0.000 HERTZ MINIMUM AND 1.000 GIGAHERTZ MAXIMUM; Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE; Overall Diameter: 0.578 INCHES NOMINAL IN. 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 5985-00-103-1878 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.