The Relay-Switch, cataloged under National Stock Number 5999-01-034-1383, 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 Northrop Grumman Support Services Corp. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-01-034-1383 |
| Primary Part Number | 138C443H01 |
| Item Name | Relay-Switch |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Contact Current Type | AC |
| Operating Current in Amps | 30.0 NOMINAL |
| Current Rating at Maximum Rated Voltage | 30.0 AMPERES NOMINAL |
| Voltage Rating at Maximum Rated Current | 208.0 VOLTS |
| Operating Voltage in Volts | 208.0 NOMINAL |
| Switch Type | RELAY |
| Maximum DC Resistance in Ohms | 6.9 |
| Relay Type | RELAY-SWITCH |
| Maximum Voltage Rating in Volts | 208.0 |
| Coil Current Type | DC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | JZ |
| Weight | 0.0100 lbs |
| Cube | 0.0010 cu ft |
| Part Number | Manufacturer |
|---|---|
| 138C443H01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| H-A3A-032 | Leach International Corp Div Leach International Corporation (USA) |
| Reference | Meaning |
|---|---|
| 138C443H01 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5999-01-034-1383 is a Relay-Switch, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-034-1383 has 2 manufacturer part numbers on file: 138C443H01 (Northrop Grumman Support Services Corp), H-A3A-032 (Leach International Corp Div Leach International Corporation).
Key specifications for 138C443H01: Contact Current Type: AC; Overall Height: 2.500 INCHES NOMINAL IN; Operating Current in Amps: 30.0 NOMINAL; Current Rating at Maximum Rated Voltage: 30.0 AMPERES NOMINAL. 10 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 5999-01-034-1383 has DEMIL Code Q. 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.