The Flange Kit,heating Element, cataloged under National Stock Number 4540-00-431-9805, is classified within Federal Supply Class 4540 (Waste Disposal Equipment) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4540-00-431-9805 |
| Item Name | Flange Kit,heating Element |
| FSC / FSG | 4540 / 45 — Waste Disposal Equipment |
| Status | ACTIVE |
| General Characteristics Item Description | SQ FLANGE 2.500 BY 2.500,4 BOLT HOLES ON 2.750 IN. BOLT CIRCLE,1.938 IN. CENTER TO CENTER BOLT HOLES,GASKET INCLUDED P/N FG-24 IN |
| 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 |
|---|---|
| PCN41502-0 | 5/9 Secondary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| PCN415020 | 5/9 Secondary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| ADF2 | 3/9 Design control — primary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| 4150-2-0 | 5/9 Secondary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
NSN 4540-00-431-9805 is a Flange Kit,heating Element, classified under FSC 4540, Waste Disposal Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6515-01-153-5508. Verify interchangeability with system specifications before substitution.
Key specifications for 4540-00-431-9805: General Characteristics Item Description: SQ FLANGE 2.500 BY 2.500,4 BOLT HOLES ON 2.750 IN. BOLT CIRCLE,1.938 IN. CENTER TO CENTER BOLT HOLES,GASKET INCLUDED P/N FG-24 IN. 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.