The Coupling,boss, cataloged under National Stock Number 4730-01-121-8622, 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 Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply. Government technical data includes 9 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 | 4730-01-121-8622 |
| Primary Part Number | AA67073-6K |
| Item Name | Coupling,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply |
| Status | ACTIVE |
| Connection Style | GASKET SEAL (BOSS) ALL ENDS |
| Nominal Overall Length | 1.180 INCHES IN |
| Connection Type | THREADED INTERNAL BOSS ALL ENDS |
| Style Designator | RIGID, SHORT CENTER WRENCHING FACILITY |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Maximum Operating Temp | 320.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Thread Class | 2B ALL ENDS |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| 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 |
|---|---|
| AA67073-6K PRIMARY | Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply (USA) |
| 5475497 | Naval Sea Systems Command (USA) |
NSN 4730-01-121-8622 is a Coupling,boss, manufactured by Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-121-8622 has 2 manufacturer part numbers on file: AA67073-6K (Allan Aircraft Supply Co., Llc Dba Allan Aircraft Supply), 5475497 (Naval Sea Systems Command).
Key specifications for AA67073-6K: Connection Style: GASKET SEAL (BOSS) ALL ENDS; Nominal Overall Length: 1.180 INCHES IN; Connection Type: THREADED INTERNAL BOSS ALL ENDS; Style Designator: RIGID, SHORT CENTER WRENCHING FACILITY. 9 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.