The Flange,pipe, cataloged under National Stock Number 4730-01-415-4941, 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 Oil States Industries, Inc. Div Special Products Div. Government technical data includes 20 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-415-4941 |
| Primary Part Number | ND8281-2 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Oil States Industries, Inc. Div Special Products Div |
| Status | ACTIVE |
| Flange Diameter | 6.125 INCHES NOMINAL IN |
| Face Seating Surface Condition | UNFINISHED |
| Socket Depth | 0.250 INCHES NOMINAL IN |
| Maximum Operating Temp and Media for Which Designed | 160.0 FAHRENHEIT WATER DEGF |
| Tube Outside Diameter for Which Designed | 1.500 INCHES NOMINAL IN |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | ROUND, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | MIL-C-24679 MIL SPEC SINGLE MATERIAL RESPONSE |
| Unthreaded Reducer Hole Diameter | 1.770 INCHES NOMINAL IN |
| Nominal Thread Size | 0.500 INCHES IN |
| Reducer Flange Hole Type | CONCENTRIC |
| Recess Diameter | 1.560 INCHES NOMINAL IN |
| Bolt Hole Quantity | 6 |
| Bolt Circle Diameter | 3.940 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNS |
| Thread Class | 2B |
| Thread Quantity Per Inch | 13 |
| Material | COPPER ALLOY 715 |
| Thickness | 1.000 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 |
|---|---|
| ND8281-2 PRIMARY | Oil States Industries, Inc. Div Special Products Div (USA) |
NSN 4730-01-415-4941 is a Flange,pipe, manufactured by Oil States Industries, Inc. Div Special Products Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-415-4941 has 1 manufacturer part number on file: ND8281-2 (Oil States Industries, Inc. Div Special Products Div).
Key specifications for ND8281-2: Flange Diameter: 6.125 INCHES NOMINAL IN; Face Seating Surface Condition: UNFINISHED; Socket Depth: 0.250 INCHES NOMINAL IN; Maximum Operating Temp and Media for Which Designed: 160.0 FAHRENHEIT WATER DEGF. 20 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.