The Ring Assembly,throat,convergent, cataloged under National Stock Number 4530-01-227-1133, is classified within Federal Supply Class 4530 (Fuel Burning Equipment Units) of the Plumbing, Heating, and Waste Disposal group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4530-01-227-1133 |
| Item Name | Ring Assembly,throat,convergent |
| FSC / FSG | 4530 / 45 — Fuel Burning Equipment Units |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL O/A; 12 INTERNAL FINS EQL SPACED; 18.000 IN. DIA 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 |
|---|---|
| 4787 PIECE 1B | 3/9 Design control — primary reference Affinito Machine and Tool Llc |
| 4787 PIECE 1B | 5/9 Secondary reference U.S. Government activity |
| 4787 | 5/9 Secondary reference U.S. Government activity |
NSN 4530-01-227-1133 is a Ring Assembly,throat,convergent, classified under FSC 4530, Fuel Burning Equipment Units. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5935-01-275-8202, 6685-01-393-4025, 6685-01-487-0739. Verify interchangeability with system specifications before substitution.
Key specifications for 4530-01-227-1133: General Characteristics Item Description: STEEL O/A; 12 INTERNAL FINS EQL SPACED; 18.000 IN. DIA 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.