The Delay Line, cataloged under National Stock Number 5999-00-421-7386, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 17 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 item shares 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 | 5999-00-421-7386 |
| Primary Part Number | 170443-1 |
| Item Name | Delay Line |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | L3harris Technologies, Inc Div Space & Airborne Systems |
| Status | ACTIVE |
| Signal Delay Method | TRANSMISSION LINE |
| FSC Application Data | INTERROGATOR SETS,ELECTRONIC IDENTIFICATION |
| Section Delay Time | 0.000 MILLISECONDS MINIMUM SINGLE SECTION MS |
| Section Delay Time | 3.333 MILLISECONDS MAXIMUM SINGLE SECTION MS |
| Mounting Facility Quantity | 4 |
| Output Impedance Rating | 6.500 KILOHMS |
| Mounting Provision Arrangement Style | FOUR POSITION RECTANGULAR |
| Longest Vertical Distance Between Mounting Centers | 6.000 INCHES NOMINAL IN |
| Frequency Bandwidth | 3600.0 KILOHERTZ NOMINAL |
| Delay Time Variation Method | VARIABLE |
| Input Impedance Rating | 1.000 KILOHMS |
| Mounting Facility | THREADED HOLE(S) |
| Terminal Type and Quantity | 9 TAB SOLDER LUG |
| Operating Temp Range | -40.0 TO 55.0 CELSIUS DEGC |
| Frequency Rating | 1.000 MEGAHERTZ NOMINAL |
| Thread Size and Series/type Designator | 0.164-32 UNIFIED NATIONAL COARSE (UNC) |
| Longest Horizontal Distance Between Mounting Centers | 6.000 INCHES NOMINAL IN |
| 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 | N |
| Unit of Issue | EA |
| Acquisition advice code | YL |
| Part Number | Manufacturer |
|---|---|
| 170443-1 PRIMARY | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
NSN 5999-00-421-7386 is a Delay Line, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-00-421-7386 has 1 manufacturer part number on file: 170443-1 (L3harris Technologies, Inc Div Space & Airborne Systems).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-446-7628. Verify interchangeability with system specifications before substitution.
Key specifications for 170443-1: Signal Delay Method: TRANSMISSION LINE; FSC Application Data: INTERROGATOR SETS,ELECTRONIC IDENTIFICATION; Section Delay Time: 0.000 MILLISECONDS MINIMUM SINGLE SECTION MS; Section Delay Time: 3.333 MILLISECONDS MAXIMUM SINGLE SECTION MS. 17 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 5999-00-421-7386 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.