The Flange,pipe, cataloged under National Stock Number 4730-01-179-9891, 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 Naval Sea Systems Command. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-179-9891 |
| Primary Part Number | RE-B102124 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Diameter | 1.750 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Socket Depth | 0.251 INCHES NOMINAL IN |
| Tube Outside Diameter for Which Designed | 0.938 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | ROUND, NO BOLT HOLES |
| Material Document and Classification | QQ-C-530,COND A OR H FED SPEC SINGLE MATERIAL RESPONSE |
| Recess Diameter | 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Thickness | 0.438 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 |
|---|---|
| RE-B102124 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| RE-B102124 | 5/2 Secondary reference U.S. Government activity |
| RE-B102124REVB | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-01-179-9891 is a Flange,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-179-9891 has 1 manufacturer part number on file: RE-B102124 (Naval Sea Systems Command).
Key specifications for RE-B102124: Flange Diameter: 1.750 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Socket Depth: 0.251 INCHES NOMINAL IN; Tube Outside Diameter for Which Designed: 0.938 INCHES NOMINAL 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.
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.