The Elbow,flange to Pipe, cataloged under National Stock Number 4730-00-977-8128, 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 Essex Industries, Inc. Dba Essex Industries. Government technical data includes 17 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. 3 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 | 4730-00-977-8128 |
| Primary Part Number | 230166 |
| Item Name | Elbow,flange to Pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Essex Industries, Inc. Dba Essex Industries |
| Status | ACTIVE |
| Flange Shape | OVAL WITH HOLES SECOND END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Nominal Length | 2.220 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 1.578 INCHES SECOND END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED INTERNAL PIPE FIRST END |
| Bolt Hole Nominal Diameter | 0.285 INCHES SECOND END IN |
| Leg Length | 0.750 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.500 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 1.250 INCHES FIRST END IN |
| Bolt Hole Quantity | 2 SECOND END |
| Nominal Width | 1.556 INCHES SECOND END IN |
| Material | STEEL OVERALL |
| Thread Series Designator | NPT FIRST END |
| Nominal Thickness | 1.094 INCHES SECOND END 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 |
|---|---|
| 230166 PRIMARY | Essex Industries, Inc. Dba Essex Industries (USA) |
NSN 4730-00-977-8128 is a Elbow,flange to Pipe, manufactured by Essex Industries, Inc. Dba Essex Industries, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-977-8128 has 1 manufacturer part number on file: 230166 (Essex Industries, Inc. Dba Essex Industries).
3 possible matches (shared part number, not a government interchangeability claim): 2815-01-046-2010, 6810-01-505-2172, 5998-01-508-3939. Verify interchangeability with system specifications before substitution.
Key specifications for 230166: Flange Shape: OVAL WITH HOLES SECOND END; Flow Angle: 90.0 DEGREES; Flange Face Design: PLAIN SECOND END; Connection Style: PLAIN (PIPE) FIRST END. 17 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.