The Elbow,boss, cataloged under National Stock Number 4730-00-008-8899, 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 Loughlin Manufacturing Corp.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-008-8899 |
| Primary Part Number | A51H92503-13 |
| Item Name | Elbow,boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Loughlin Manufacturing Corp. |
| Status | ACTIVE |
| Flow Angle | 30.0 DEGREES |
| Connection Style | GASKET SEAL (BOSS) FIRST END |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Leg Length | 0.709 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.562 INCHES FIRST END IN |
| Surface Treatment | ANODIZE OVERALL |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Thread Class | 3B FIRST END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END |
| 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 |
|---|---|
| A51H92503-13 PRIMARY | Loughlin Manufacturing Corp. (USA) |
| A51H92503-13 | Northrop Grumman Systems Corporation (USA) |
| A51H92503-13 PRIMARY | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport (USA) |
| Reference | Meaning |
|---|---|
| A51H92503-13 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51H92503 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| A51H92503-13 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 4730-00-008-8899 is a Elbow,boss, manufactured by Loughlin Manufacturing Corp., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-008-8899 has 3 manufacturer part numbers on file: A51H92503-13 (Loughlin Manufacturing Corp.), A51H92503-13 (Northrop Grumman Systems Corporation), A51H92503-13 (Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport).
Key specifications for A51H92503-13: Flow Angle: 30.0 DEGREES; Connection Style: GASKET SEAL (BOSS) FIRST END; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Leg Length: 0.709 INCHES NOMINAL FIRST END IN. 10 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.