The Elbow,tube, cataloged under National Stock Number 4730-00-278-2312, 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 Satair A/s. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 19 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-278-2312 |
| Primary Part Number | MS51820-5 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Satair A/s |
| Status | CANCELLED |
| Furnished Items and Quantity | 1 TUBE COUPLING NUT W/SLEEVE |
| Flow Angle | 90.0 DEGREES |
| Surface Treatment Document and Classification | J514 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment Document and Classification | QQ-P-416, TY 2, CL 3 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE |
| Surface Treatment Document and Classification | QQ-P-416, TY 3, CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 1.050 INCHES MINIMUM AND 1.080 INCHES MAXIMUM ALL ENDS IN |
| Nominal Thread Size | 0.562 INCHES ALL ENDS IN |
| Seat Angle | 12.0 DEGREES ALL ENDS |
| Specification/standard Data | 96906-MS51820 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | 400.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| Nondefinitive Spec/std Data | 21D FIGURE |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Thread Class | 2A ALL ENDS A |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF ALL ENDS |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MS51820-5 | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| 6-6 080201CA | 5/9 Secondary reference U.S. Government activity |
| MS51820-5 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| MS51820-5 | 2/2 Government specification standardization U.S. Government activity |
| MS51820-5 | 5/1 Secondary reference U.S. Government activity |
| MS51820-5 | 5/1 Secondary reference Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution |
| MS51820-25 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| MS51820-5 | 5/9 Secondary reference Dana Corp Weatherhead Div |
| J514 | 5/1 Secondary reference Sae International Dba Sae International |
| 4730002782312 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| MS51820-5 | 5/9 Secondary reference Aeroquip Corp Aerospace Div Gardena Plant |
| J514 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| 6-6 080201CA | 5/1 Secondary reference Sae International Dba Sae International |
| MS51820-5 | 5/9 Secondary reference U.S. Government activity |
| MS51820-5 | 5/9 Secondary reference Imperial |
| 423266 | 5/9 Secondary reference Army Weapons Command Attn Amswe-Ree-S |
| MS51820-5 | 5/1 Secondary reference Danfoss Power Solutions II, Llc |
| MS51820-5 | 5/9 Secondary reference U.S. Government activity |
| 4730002782312 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 4730-00-278-2312 is a Elbow,tube, manufactured by Satair A/s, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: cancelled.
NSN 4730-00-278-2312 has 1 manufacturer part number on file: MS51820-5 (Satair A/s).
1 possible match (shared part number, not a government interchangeability claim): 4730-00-890-9909. Verify interchangeability with system specifications before substitution.
Key specifications for MS51820-5: Furnished Items and Quantity: 1 TUBE COUPLING NUT W/SLEEVE; Flow Angle: 90.0 DEGREES; Surface Treatment Document and Classification: J514 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Surface Treatment Document and Classification: QQ-P-416, TY 2, CL 3 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE. 19 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.
NSN 4730-00-278-2312 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.