The Flange,pipe, cataloged under National Stock Number 4730-00-127-8682, 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 Caterpillar Inc Div Caterpillar Defense. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-127-8682 |
| Primary Part Number | 4H1859 |
| Item Name | Flange,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Flange End Radius | 0.438 INCHES NOMINAL IN |
| Face Seating Surface Condition | GROUND |
| Socket Depth | 0.240 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN |
| Flange Section Style | PLAIN FACE, SOCKET NECK |
| Style Designator | OVAL, ONE BOLT HOLE CIRCLE |
| Bolt Hole Diameter | 0.438 INCHES NOMINAL IN |
| Flange Length | 3.375 INCHES NOMINAL IN |
| Recess Diameter | 1.7475 INCHES MINIMUM AND 1.7525 INCHES MAXIMUM IN |
| Bolt Hole Quantity | 2 |
| Bolt Circle Diameter | 2.500 INCHES NOMINAL IN |
| Flange Width | 2.125 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.359 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 |
|---|---|
| 4H1859 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 4730-00-127-8682 is a Flange,pipe, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-127-8682 has 1 manufacturer part number on file: 4H1859 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4H1859: Flange End Radius: 0.438 INCHES NOMINAL IN; Face Seating Surface Condition: GROUND; Socket Depth: 0.240 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN; Flange Section Style: PLAIN FACE, SOCKET NECK. 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.