The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-577-1095, 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 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-577-1095 |
| Primary Part Number | 4088778 |
| Item Name | Elbow,tube to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | GROOVED (TUBE) FIRST END |
| Connection Style | FLARED W/ GASKET SEAL (BOSS) SECOND END |
| Nominal Overall Length | 1.605 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Style Designator | ELBOW |
| Material Document and Classification | AMS 5646 SST ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Leg Length | 1.070 INCHES MINIMUM AND 1.090 INCHES MAXIMUM SECOND END IN |
| Leg Length | 1.605 INCHES NOMINAL FIRST END IN |
| Reduced Passage Nominal Inside Diameter | 0.190 INCHES FIRST END IN |
| Reduced Passage Nominal Inside Diameter | 0.172 INCHES SECOND END IN |
| Nominal Thread Size | 0.438 INCHES SECOND END IN |
| Thread Class | 3A SECOND END A |
| Thread Quantity Per Inch | 20 SECOND END |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) SECOND 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 |
|---|---|
| 4088778 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 4730-01-577-1095 is a Elbow,tube 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 4730-01-577-1095 has 1 manufacturer part number on file: 4088778 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4088778: Flow Angle: 90.0 DEGREES; Connection Style: GROOVED (TUBE) FIRST END; Connection Style: FLARED W/ GASKET SEAL (BOSS) SECOND END; Nominal Overall Length: 1.605 INCHES IN. 17 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.