The Contact Assembly,electrical, cataloged under National Stock Number 5999-00-403-4237, 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 Interstate Electronics Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5999-00-403-4237 |
| Primary Part Number | 499-020-073 |
| Item Name | Contact Assembly,electrical |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | L3harris Interstate Electronics Corporation |
| Status | ACTIVE |
| Structural Design | NONSWITCHING |
| Precious Material | PALLADIUM |
| Government Agency Controlling Contact | USA AND USAF AND USN |
| Precious Material and Weight | 0.005 PALLADIUM GRAINS, TROY |
| Contact Quantity | 2 |
| Contact Item Name Assigned by Government Agency | CONTACT ASSY |
| Precious Material and Location | CONTACT SURFACE PALLADIUM |
| Contact Identifying Number Assigned by Government Agency | H803P |
| 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 | Y |
| Weight | 0.0700 lbs |
| Cube | 0.0179 cu ft |
| Part Number | Manufacturer |
|---|---|
| 499-020-073 | L3harris Interstate Electronics Corporation (USA) |
| Reference | Meaning |
|---|---|
| H803P | 3/2 Design control — primary reference U.S. Government activity |
| 853669 | 5/9 Secondary reference L3 Aviation Products, Inc. Dba L3 Technologies |
NSN 5999-00-403-4237 is a Contact Assembly,electrical, manufactured by L3harris Interstate Electronics Corporation, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-00-403-4237 has 1 manufacturer part number on file: 499-020-073 (L3harris Interstate Electronics Corporation).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-289-5348. Verify interchangeability with system specifications before substitution.
Key specifications for 499-020-073: Structural Design: NONSWITCHING; Precious Material: PALLADIUM; Government Agency Controlling Contact: USA AND USAF AND USN; Precious Material and Weight: 0.005 PALLADIUM GRAINS, TROY. 8 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.