The Flange,pipe, cataloged under National Stock Number 4730-01-522-9837, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-522-9837 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Tube Outside Diameter for Which Designed | 1.250 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE, RAISED NECK |
| Style Designator | RECTANGULAR, WITH BOLT HOLES |
| Bolt Hole Diameter | 0.193 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN |
| Neck Height | 0.250 INCHES NOMINAL IN |
| Flange Length | 3.230 INCHES MINIMUM AND 3.250 INCHES MAXIMUM IN |
| Reducer Flange Hole Type | ECCENTRIC |
| Bolt Hole Quantity | 4 |
| Center to Center Distance Between Bolt Holes Along Length | 1.740 INCHES MINIMUM AND 1.760 INCHES MAXIMUM IN |
| Center to Center Distance Between Bolt Holes Along Width | 2.928 INCHES MINIMUM AND 2.948 INCHES MAXIMUM IN |
| Outside Edge to Bolt Hole Center Distance Along Length | 1.147 INCHES NOMINAL IN |
| Flange Width | 4.115 INCHES MINIMUM AND 4.125 INCHES MAXIMUM IN |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.750 INCHES NOMINAL IN |
| Thickness | 0.045 INCHES MINIMUM AND 0.075 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 |
| Reference | Meaning |
|---|---|
| MS24335-20 | 2/2 Government specification standardization U.S. Government activity |
NSN 4730-01-522-9837 is a Flange,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-522-9837: Tube Outside Diameter for Which Designed: 1.250 INCHES NOMINAL IN; Flange Section Style: PLAIN FACE, RAISED NECK; Style Designator: RECTANGULAR, WITH BOLT HOLES; Bolt Hole Diameter: 0.193 INCHES MINIMUM AND 0.208 INCHES MAXIMUM IN. 14 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.