The Elbow,flange to Pipe, cataloged under National Stock Number 4730-01-167-9863, 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 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-167-9863 |
| Primary Part Number | 845-4775995 ASSY 55 |
| Item Name | Elbow,flange to Pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Furnished Items and Quantity | 4 BOLT AND 1 PREFORMED PACKING AND 4 FLAT WASHER |
| Flow Angle | 90.0 DEGREES |
| Nominal Pipe Size Accommodated | 1.500 INCHES FIRST END IN |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Connection Style | SOCKET (PIPE) FIRST END |
| Nominal Length | 4.250 INCHES SECOND END IN |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | FLANGE SECOND END |
| Material Document and Classification | QQ-S-763,CL 304,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.660 INCHES SECOND END IN |
| Leg Length | 3.125 INCHES NOMINAL FIRST END IN |
| Leg Length | 2.030 INCHES NOMINAL SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 3.062 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Nominal Width | 4.250 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 3.062 INCHES SECOND END IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Raised Face Nominal Diameter | 2.372 INCHES SECOND END IN |
| Raised Face Nominal Height | 0.125 INCHES SECOND END IN |
| Nominal Thickness | 0.315 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 |
|---|---|
| 845-4775995 ASSY 55 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2621-166-04 ASSY 55 | 3/2 Design control — primary reference U.S. Government activity |
| 845-4775995 | D/9 Drawing number reference only U.S. Government activity |
NSN 4730-01-167-9863 is a Elbow,flange to Pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-167-9863 has 1 manufacturer part number on file: 845-4775995 ASSY 55 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-192-2927. Verify interchangeability with system specifications before substitution.
Key specifications for 845-4775995 ASSY 55: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Furnished Items and Quantity: 4 BOLT AND 1 PREFORMED PACKING AND 4 FLAT WASHER; Flow Angle: 90.0 DEGREES; Nominal Pipe Size Accommodated: 1.500 INCHES FIRST END IN. 21 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.