The Elbow,tube, cataloged under National Stock Number 4730-00-004-4747, 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 Sps Technologies, Llc Dba Airdrome Precision Components. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-004-4747 |
| Primary Part Number | AP321T03 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sps Technologies, Llc Dba Airdrome Precision Components |
| Status | ACTIVE |
| Flow Angle | 45.0 DEGREES |
| Connection Style | CUSHION SEAL (TUBE) ALL ENDS |
| Material Document and Classification | AMS 4965,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V |
| Nominal Outside Diameter Tube Accommodated | 0.188 INCHES ALL ENDS IN |
| Leg Length | 0.363 INCHES MINIMUM AND 0.393 INCHES MAXIMUM SECOND END IN |
| Leg Length | 0.962 INCHES MINIMUM AND 1.002 INCHES MAXIMUM FIRST END IN |
| Nominal Thread Size | 0.375 INCHES ALL ENDS IN |
| Nominal Thread Size | 0.375 INCHES FIRST END BULKHEAD IN |
| Maximum Operating Temp | 135.0 CELSIUS SINGLE RESPONSE DEGC |
| Thread Class | 3A FIRST END BULKHEAD A |
| Thread Class | 3A ALL ENDS A |
| Thread Quantity Per Inch | 28 ALL ENDS |
| Thread Quantity Per Inch | 28 FIRST END BULKHEAD |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Thread Series Designator | UNJS ALL ENDS |
| Thread Series Designator | UNJS FIRST END BULKHEAD |
| 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 |
|---|---|
| AP321T03 PRIMARY | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| R44359T03 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| AE16339-3 PRIMARY | Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA) |
| TF321T03 PRIMARY | Smiths Tubular Systems-Laconia, Inc. (USA) |
| Reference | Meaning |
|---|---|
| GE510BN3 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| R44359T-03 | 5/9 Secondary reference HS Marston Aerospace Limited |
| GE510BN | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 4730-00-004-4747 is a Elbow,tube, manufactured by Sps Technologies, Llc Dba Airdrome Precision Components, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-004-4747 has 4 manufacturer part numbers on file: AP321T03 (Sps Technologies, Llc Dba Airdrome Precision Components), R44359T03 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), AE16339-3 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), TF321T03 (Smiths Tubular Systems-Laconia, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 4730-00-272-9791, 4730-00-275-1402, 4730-01-129-5575. Verify interchangeability with system specifications before substitution.
Key specifications for AP321T03: Flow Angle: 45.0 DEGREES; Connection Style: CUSHION SEAL (TUBE) ALL ENDS; Material Document and Classification: AMS 4965,6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V; Nominal Outside Diameter Tube Accommodated: 0.188 INCHES ALL ENDS IN. 16 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.