The Cooling Coil,air,duct Type, cataloged under National Stock Number 4130-00-979-5771, is classified within Federal Supply Class 4130 (Refrigeration and Air Conditioning Components) of the Refrigeration, AC, and Air Circulating Equipment group. The manufacturer of record is Larkin Coils Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4130-00-979-5771 |
| Primary Part Number | 49WCS336-12 |
| Item Name | Cooling Coil,air,duct Type |
| FSC / FSG | 4130 / 41 — Refrigeration and Air Conditioning Components |
| Manufacturer | Larkin Coils Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 49WCS336-12 PRIMARY | Larkin Coils Inc (USA) |
| Reference | Meaning |
|---|---|
| 22930-2 | 5/9 Secondary reference Rheem Mfg Co Air Conditioning Div |
| C22930-2 | 5/9 Secondary reference Rheem Mfg Co Air Conditioning Div |
| 4549-3-12 1-2RH | 5/9 Secondary reference Larkin Coils Inc |
| C22930 | 5/9 Secondary reference Rheem Mfg Co Air Conditioning Div |
NSN 4130-00-979-5771 is a Cooling Coil,air,duct Type, manufactured by Larkin Coils Inc, classified under FSC 4130, Refrigeration and Air Conditioning Components. Status: active.
NSN 4130-00-979-5771 has 1 manufacturer part number on file: 49WCS336-12 (Larkin Coils Inc).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-287-7807. Verify interchangeability with system specifications before substitution.
Key specifications for 49WCS336-12: Special Features: RH COIL HEAD END,56.500 IN.LG;49.000 IN.H;5.000 IN.DP; IN. 0 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.