The Bellows Assembly,ai, cataloged under National Stock Number 4730-01-584-6975, 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 Senior Operations Llc Dba Metal Bellows Div Metal Bellows. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-584-6975 |
| Primary Part Number | 20-053-1 |
| Item Name | Bellows Assembly,ai |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Senior Operations Llc Dba Metal Bellows Div Metal Bellows |
| Status | ACTIVE |
| Overall Diameter | 5.93 INCHES NOMINAL IN |
| Supplementary Features | MATERIAL: CRES, TYPE 304,316,321 OR 347 |
| Pressure Rating | ERR-060 |
| Functional Description | MAX OPERATING PRESSURE: 50PSI AT 500F MAX,PRESSURE TEST (PSIG):5, WEIGHT IN LBS: .44 |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 20-053-1 PRIMARY | Senior Operations Llc Dba Metal Bellows Div Metal Bellows (USA) |
| 20-053-1 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| Reference | Meaning |
|---|---|
| 20-053-1 | 1/2 Source control — Government-approved source U.S. Government activity |
| 20-053-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-01-584-6975 is a Bellows Assembly,ai, manufactured by Senior Operations Llc Dba Metal Bellows Div Metal Bellows, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-584-6975 has 2 manufacturer part numbers on file: 20-053-1 (Senior Operations Llc Dba Metal Bellows Div Metal Bellows), 20-053-1 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution).
Key specifications for 20-053-1: Overall Diameter: 5.93 INCHES NOMINAL IN; Supplementary Features: MATERIAL: CRES, TYPE 304,316,321 OR 347; Overall Width: 2.06 INCHES MINIMUM AND 2.12 INCHES MAXIMUM IN; Pressure Rating: ERR-060. 5 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.