The Elbow,flange to Boss, cataloged under National Stock Number 4730-00-804-5614, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 24 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-804-5614 |
| Primary Part Number | 403770 |
| Item Name | Elbow,flange to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Flange Shape | TRIANGULAR WITH HOLES FIRST END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | RAISED STRAIGHT FIRST END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Nominal Length | 2.524 INCHES FIRST END IN |
| Bolt Circle Nominal Diameter | 2.580 INCHES FIRST END IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | FLANGE FIRST END |
| Thread Pitch Diameters | +1.3878 TO 1.4900 INCHES SECOND END IN |
| Material Document and Classification | AMS 4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALLUNABLE TO DECODE |
| Material Document and Classification | AMS 4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.344 INCHES FIRST END IN |
| Leg Length | 1.965 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.443 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 1.500 INCHES SECOND END IN |
| Bolt Hole Quantity | 3 FIRST END |
| Nominal Width | 2.624 INCHES FIRST END IN |
| Thread Quantity Per Inch | 12 SECOND END |
| Material | ALUMINUM ALLOY OVERALLUNABLE TO DECODE |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNS SECOND END |
| Raised Face Nominal Diameter | 1.284 INCHES FIRST END IN |
| Raised Face Nominal Height | 0.483 INCHES FIRST END IN |
| Nominal Thickness | 0.200 INCHES FIRST END IN |
| 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 |
|---|---|
| 403770 | Naruto Seisakusho (JPN) |
| 403770 | Lnd Incorporated Dba Lnd Inc (USA) |
| 403770 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 403770 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 403770 | 5/9 Secondary reference Sterling Tool Inc |
| 403770 | 5/9 Secondary reference Pacific Engineering and Mfg Co |
| 403770 | 5/9 Secondary reference Kwik File Storage Systems Llc |
| 403770 | 5/9 Secondary reference Maruto Seisakusho |
| 403770 | 5/9 Secondary reference General Electric Co Apparatus Sales Division of Apparatus Group |
NSN 4730-00-804-5614 is a Elbow,flange to Boss, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-804-5614 has 3 manufacturer part numbers on file: 403770 (Naruto Seisakusho), 403770 (Lnd Incorporated Dba Lnd Inc), 403770 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 403770: Flange Shape: TRIANGULAR WITH HOLES FIRST END; Flow Angle: 90.0 DEGREES; Flange Face Design: RAISED STRAIGHT FIRST END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END. 24 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.