The Flange,pipe, cataloged under National Stock Number 4730-01-282-5124, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-282-5124 |
| Primary Part Number | 810-1385861 TYG 3.5IN |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Diameter | 6.375 INCHES NOMINAL IN |
| Face Seating Surface Condition | MACHINED |
| Maximum Operating Temp and Media for Which Designed | 150.0 FAHRENHEIT WATER DEGF |
| Tube Outside Diameter for Which Designed | 3.500 INCHES NOMINAL IN |
| Operating Pressure and Type | 700.0 POUNDS PER SQUARE INCH (PSI) WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.688 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Groove Depth | 0.108 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN |
| Bolt Hole Quantity | 8 |
| Bolt Circle Diameter | 6.500 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Groove Width | 0.188 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 |
|---|---|
| 810-1385861 TYG 3.5IN PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 810-1385861 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4730-01-282-5124 is a Flange,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-282-5124 has 1 manufacturer part number on file: 810-1385861 TYG 3.5IN (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-303-2497, 4730-01-309-8150, 4730-01-318-8466. Verify interchangeability with system specifications before substitution.
Key specifications for 810-1385861 TYG 3.5IN: Flange Diameter: 6.375 INCHES NOMINAL IN; Face Seating Surface Condition: MACHINED; Maximum Operating Temp and Media for Which Designed: 150.0 FAHRENHEIT WATER DEGF; Tube Outside Diameter for Which Designed: 3.500 INCHES NOMINAL IN. 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.