The Adapter,heater, cataloged under National Stock Number 4520-01-419-1602, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-419-1602 |
| Item Name | Adapter,heater |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Status | ACTIVE |
| Overall Diameter | 1.630 INCHES NOMINAL IN |
| General Characteristics Item Description | CLEAN PER MIL-C-10578,TYPE V; THREE PLAIN HOLES 0.156 IN. DIA EQUALLY SPACED ON 1.124 IN. BOLT CIRCLE; ONE HOLE 0.182 IN. DIA,CBORED 0.380 IN. DIA 0.190 IN. DEEP LOCATED 60.0 DEG FROM 0.156 IN. DIA HOLE; 0.750 IN. ID IN |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 109K0178 | D/9 Drawing number reference only U.S. Government activity |
| 109K0178-1 | 5/2 Secondary reference U.S. Government activity |
| 109K0178-1 | 3/9 Design control — primary reference U.S. Government activity |
| 109K0178-1 | 5/9 Secondary reference Drs Environmental Systems Inc |
NSN 4520-01-419-1602 is a Adapter,heater, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
Key specifications for 4520-01-419-1602: Overall Height: 0.500 INCHES NOMINAL IN; Overall Diameter: 1.630 INCHES NOMINAL IN; General Characteristics Item Description: CLEAN PER MIL-C-10578,TYPE V; THREE PLAIN HOLES 0.156 IN. DIA EQUALLY SPACED ON 1.124 IN. BOLT CIRCLE; ONE HOLE 0.182 IN. DIA,CBORED 0.380 IN. DIA 0.190 IN. DEEP LOCATED 60.0 DEG FROM 0.156 IN. DIA HOLE; 0.750 IN. ID IN; Special Features: USED ON 4520-01-296-4893 AND 4520-01-338-0938. 3 specifications are 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.