The Heater Assembly, cataloged under National Stock Number 4520-01-444-6427, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-444-6427 |
| Primary Part Number | 93197-251 |
| Item Name | Heater Assembly |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CIRCULATION HEATER W/ 9 KW CAPACITY; INPUT POWER 200 VAC, 400HZ; 34.500 IN. LG, 4.400 IN. DIA, TEMP SWITCH SET AT 175 DEG F VAC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 93197-251 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
| DAA7221P101-101 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
NSN 4520-01-444-6427 is a Heater Assembly, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-444-6427 has 2 manufacturer part numbers on file: 93197-251 (Hydraulics International, Inc. Dba Hydraulics International Inc), DAA7221P101-101 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
Key specifications for 93197-251: General Characteristics Item Description: CIRCULATION HEATER W/ 9 KW CAPACITY; INPUT POWER 200 VAC, 400HZ; 34.500 IN. LG, 4.400 IN. DIA, TEMP SWITCH SET AT 175 DEG F VAC. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.