The Bellows,pressure, cataloged under National Stock Number 1660-01-702-7998, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Senior Operations Llc Dba Metal Bellows Div Metal Bellows. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-01-702-7998 |
| Primary Part Number | 39950 |
| Item Name | Bellows,pressure |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Senior Operations Llc Dba Metal Bellows Div Metal Bellows |
| Status | ACTIVE |
| Outside Diameter | 47.75 MILLIMETERS NOMINAL MM |
| Inside Diameter | 35.56 MILLIMETERS NOMINAL MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 1660-01-702-7998 is a Bellows,pressure, manufactured by Senior Operations Llc Dba Metal Bellows Div Metal Bellows, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-702-7998 has 2 manufacturer part numbers on file: 39950 (Rolls-Royce Airlines), 39950 (Senior Operations Llc Dba Metal Bellows Div Metal Bellows).
Key specifications for 39950: Outside Diameter: 47.75 MILLIMETERS NOMINAL MM; Overall Length: 63.5 MILLIMETERS NOMINAL MM; Inside Diameter: 35.56 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: BELLOWS ASSY. 2 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.