The Elbow,flange to Tube, cataloged under National Stock Number 4730-00-075-2774, 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 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-075-2774 |
| Primary Part Number | 479099 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Face Design | RAISED WITH CURVE AND RADIUS SECOND END |
| Material Document and Classification | AMS4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.281 INCHES SECOND END IN |
| Leg Length | 1.488 INCHES MINIMUM AND 1.558 INCHES MAXIMUM FIRST END IN |
| Leg Length | 2.673 INCHES MINIMUM AND 2.737 INCHES MAXIMUM SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 1.900 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 1.900 INCHES SECOND END IN |
| Material | ALUMINUM ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
NSN 4730-00-075-2774 is a Elbow,flange to Tube, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-075-2774 has 2 manufacturer part numbers on file: 479099 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 479099 (Rtx Corporation Div Pratt & Whitney).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-672-0654. Verify interchangeability with system specifications before substitution.
Key specifications for 479099: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Face Design: RAISED WITH CURVE AND RADIUS SECOND END; Material Document and Classification: AMS4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Bolt Hole Nominal Diameter: 0.281 INCHES SECOND 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.
NSN 4730-00-075-2774 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.