The Contact,electrical, cataloged under National Stock Number 5999-00-366-9226, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 10 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-00-366-9226 |
| Primary Part Number | 542A987G1 |
| Item Name | Contact,electrical |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Voltage Rating in Volts | 440.0 AC |
| Mounting Facility Quantity | 1 |
| Precious Material | SILVER |
| Mounting Method | UNTHREADED HOLE(S) |
| Unthreaded Mounting Hole Diameter | 0.188 INCHES NOMINAL IN |
| Precious Material and Weight | 0.100 SILVER GRAINS, TROY |
| Precious Material and Location | CONTACT SILVER |
| Material | SILVER CONTACT |
| Terminal Type and Quantity | 1 TAB, SOLDER LUG AXIALLY AT ONE END |
| Current Rating in Amps | 20.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Weight | 0.0500 lbs |
| Cube | 0.0400 cu ft |
| Part Number | Manufacturer |
|---|---|
| 542A987G1 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| K3845725G1 | C/1 Advisory reference — outside the item-of-supply concept General Electric Co Switchgear and Control Division of Apparatus Group |
| 542A987G1 | 5/9 Secondary reference General Electric Co General Purpose Control Dept |
| 3845725G1 | 5/9 Secondary reference General Electric Company |
| 3845725G1 | 5/9 Secondary reference General Electric Co Switchgear and Control Division of Apparatus Group |
NSN 5999-00-366-9226 is a Contact,electrical, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-00-366-9226 has 1 manufacturer part number on file: 542A987G1 (Lockheed Martin Corporation Div Rms).
Key specifications for 542A987G1: Voltage Rating in Volts: 440.0 AC; Mounting Facility Quantity: 1; Precious Material: SILVER; Mounting Method: UNTHREADED HOLE(S). 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.
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.