The Flange,pipe, cataloged under National Stock Number 4730-01-201-8505, 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 General Electric Company. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-201-8505 |
| Primary Part Number | 1281M56P01 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Flange Section Style | PLAIN FACE, WELDING NECK |
| Style Designator | TRIANGULAR, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Neck Height | 0.170 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5362,COMP 347 FED SPEC SINGLE MATERIAL RESPONSE |
| Flange Length | 1.780 INCHES NOMINAL IN |
| Bolt Hole Quantity | 3 |
| Material | STEEL CORROSION RESISTING |
| Thickness | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM 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 |
|---|---|
| 1281M56P01 | Gkn Aerospace Chem-Tronics Inc (USA) |
| 1281M56P01 | General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp (USA) |
| 1281M56P01 | Fredon Corp (USA) |
| 1281M56P01 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 1281M56P01 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-201-8505 is a Flange,pipe, manufactured by General Electric Company, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-201-8505 has 4 manufacturer part numbers on file: 1281M56P01 (Gkn Aerospace Chem-Tronics Inc), 1281M56P01 (General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp), 1281M56P01 (Fredon Corp), 1281M56P01 (General Electric Company).
Key specifications for 1281M56P01: Flange Section Style: PLAIN FACE, WELDING NECK; Style Designator: TRIANGULAR, ONE BOLT HOLE CIRCLE; Bolt Hole Diameter: 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Neck Height: 0.170 INCHES NOMINAL IN. 9 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.