The Delay Line, cataloged under National Stock Number 5999-00-042-8399, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-00-042-8399 |
| Item Name | Delay Line |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Status | ACTIVE |
| Signal Delay Method | TRANSMISSION LINE |
| Section Delay Time | 400.000 NANOSECONDS NOMINAL SINGLE SECTION NS |
| Output Impedance Rating | 100.000 OHMS |
| Individual Section Quantity | 1 |
| Frequency Bandwidth | 9000.0 KILOHERTZ NOMINAL |
| Input Impedance Rating | 100.000 OHMS |
| Mounting Facility | TERMINAL |
| Terminal Type and Quantity | 2 COAXIAL RECEPTACLE |
| Surface Treatment | PAINT CASE |
| Operating Temp Range | -55.0 TO 125.0 CELSIUS DEGC |
| Material | COPPER ALLOY CASE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | X |
| Weight | 0.0300 lbs |
| Cube | 0.0318 cu ft |
| Reference | Meaning |
|---|---|
| 88P803-001 | 5/9 Secondary reference Ail Systems Inc Sub of Eaton Corp |
| F1208 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5999-00-042-8399 is a Delay Line, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4820-00-203-2973, 3120-00-287-7499. Verify interchangeability with system specifications before substitution.
Key specifications for 5999-00-042-8399: Signal Delay Method: TRANSMISSION LINE; Section Delay Time: 400.000 NANOSECONDS NOMINAL SINGLE SECTION NS; Output Impedance Rating: 100.000 OHMS; Individual Section Quantity: 1. 11 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 5999-00-042-8399 has DEMIL Code D. 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.