The Heater,electronic Component, cataloged under National Stock Number 5999-01-268-4263, 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 Teledyne Micropac, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5999-01-268-4263 |
| Primary Part Number | 51974A |
| Item Name | Heater,electronic Component |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Teledyne Micropac, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | 0.760 IN. LG; 0.510 IN. W; 0.070 IN. THK; FOUR 0.020 IN. DIA X 0.200 IN. LG PINS EQUALLY SPACED 0.600 IN. C TO C ALONG THE LENGTH X 0.400 IN. C TO C ALONG THE WIDTH IN |
| 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 | JN |
| Part Number | Manufacturer |
|---|---|
| 51974A | Teledyne Micropac, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 807175-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5999-01-268-4263 is a Heater,electronic Component, manufactured by Teledyne Micropac, Inc., classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-268-4263 has 1 manufacturer part number on file: 51974A (Teledyne Micropac, Inc.).
Key specifications for 51974A: General Characteristics Item Description: 0.760 IN. LG; 0.510 IN. W; 0.070 IN. THK; FOUR 0.020 IN. DIA X 0.200 IN. LG PINS EQUALLY SPACED 0.600 IN. C TO C ALONG THE LENGTH X 0.400 IN. C TO C ALONG THE WIDTH IN. 1 specification is 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.