The Cap,special, cataloged under National Stock Number 4730-01-561-3667, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Western Fluid Components Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4730-01-561-3667 |
| Primary Part Number | 4FNU-SS-QMS |
| Item Name | Cap,special |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Western Fluid Components 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 |
|---|---|
| 4FNU-SS-QMS PRIMARY | Western Fluid Components Inc (USA) |
NSN 4730-01-561-3667 is a Cap,special, manufactured by Western Fluid Components Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-561-3667 has 1 manufacturer part number on file: 4FNU-SS-QMS (Western Fluid Components Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-732-9091. Verify interchangeability with system specifications before substitution.
Key specifications for 4FNU-SS-QMS: Part Name Assigned by Controlling Agency: CAP,SPECIAL. 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.