The Flange,pipe, cataloged under National Stock Number 4730-01-377-7415, 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 Main Manufacturing Products Inc. Government technical data includes 13 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-377-7415 |
| Primary Part Number | 1173-12-12M10 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Main Manufacturing Products Inc |
| Status | ACTIVE |
| Face Seating Surface Condition | MACHINED |
| Flange Section Style | PLAIN FACE |
| Style Designator | RECTANGULAR, WITH BOLT HOLES |
| Bolt Hole Diameter | 10.5 MILLIMETERS NOMINAL MM |
| Flange Length | 1.750 INCHES NOMINAL IN |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 0.875 INCHES NOMINAL IN |
| Center to Center Distance Between Bolt Holes Along Width | 1.875 INCHES NOMINAL IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 0.490 INCHES NOMINAL IN |
| Flange Width | 2.620 INCHES NOMINAL IN |
| Material | STEEL |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.422 INCHES NOMINAL IN |
| Thickness | 0.560 INCHES NOMINAL 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 |
|---|---|
| 1173-12-12M10 PRIMARY | Main Manufacturing Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 863T0000588-001 | 5/9 Secondary reference Lockheed Martin Corp |
| 863T0000588 | 7/1 Vendor item drawing reference Lockheed Martin Corp |
| TSAET-06-20M | 5/9 Secondary reference Main Manufacturing Products Inc |
NSN 4730-01-377-7415 is a Flange,pipe, manufactured by Main Manufacturing Products Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-377-7415 has 1 manufacturer part number on file: 1173-12-12M10 (Main Manufacturing Products Inc).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-389-8339. Verify interchangeability with system specifications before substitution.
Key specifications for 1173-12-12M10: Face Seating Surface Condition: MACHINED; Flange Section Style: PLAIN FACE; Style Designator: RECTANGULAR, WITH BOLT HOLES; Bolt Hole Diameter: 10.5 MILLIMETERS NOMINAL MM. 13 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.