The Exhaust Flex Joint, cataloged under National Stock Number 4730-01-721-8698, 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 Bird-Johnson Propeller Company, Llc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-721-8698 |
| Primary Part Number | NMM110880 |
| Item Name | Exhaust Flex Joint |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Bird-Johnson Propeller Company, Llc |
| 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 |
|---|---|
| NMM110880 PRIMARY | Bird-Johnson Propeller Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| NMM110880 REV E | D/9 Drawing number reference only Bird-Johnson Propeller Company, Llc |
| NMM110001 REV AC FIND NO 26 | D/9 Drawing number reference only Bird-Johnson Propeller Company, Llc |
NSN 4730-01-721-8698 is a Exhaust Flex Joint, manufactured by Bird-Johnson Propeller Company, Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-721-8698 has 1 manufacturer part number on file: NMM110880 (Bird-Johnson Propeller Company, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-722-7532, 5330-01-722-8181. Verify interchangeability with system specifications before substitution.
Key specifications for NMM110880: Part Name Assigned by Controlling Agency: EXHAUST FLEX JOINT. 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.