Nearby stock numbers← 4730-01-325-4008 Elbow, Flange to Hose
·
4730-01-325-4010 Elbow, Flange to Pipe →
4730-01-325-4009 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Elbow,flange to Pipe — FSC 4730
Flange Shape: ROUND WITH HOLES SECOND END
Flow Angle: 90.0 DEGREES
Nominal Pipe Size Accommodated: 1.500 INCHES FIRST END IN
Flange Face Design: PLAIN WITH GASKET GROOVE SECOND END
Connection Style: SOCKET (PIPE) FIRST END
Bolt Circle Nominal Diameter: 0.563 INCHES SECOND END IN
Connection Type: UNTHREADED INTERNAL PIPE FIRST END
Identification
NSN: 4730-01-325-4009
NIIN: 013254009
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description
The Elbow,flange to Pipe, cataloged under National Stock Number 4730-01-325-4009, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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.
700.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Leg Length
2.850 INCHES NOMINAL FIRST END IN
Leg Length
3.530 INCHES NOMINAL SECOND END IN
Nominal Outside Diameter
3.937 INCHES SECOND END IN
Bolt Hole Quantity
6 SECOND END
Material
COPPER ALLOY OVERALL
Nominal Thickness
0.780 INCHES SECOND END IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-325-40102621-166-02 PIECE R31POSSIBLE MATCH
ELBOW,FLANGE TO PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-325-90202621-166-02 PIECE 202MODPOSSIBLE MATCH
ELBOW,FLANGE TO PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-329-21372621-166-02 PC-140POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-329-21382621-166-02 PC-142POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-329-21632621-166-02 ASSY-182POSSIBLE MATCH
ELBOW,PIPE TO BOSS
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
508-4685949 ITEM F3
5/2Secondary reference
U.S. Government activity
2621-166-02 PIECE 31
3/2Design control — primary reference
U.S. Government activity
508-4685949
D/9Drawing number reference only
U.S. Government activity
2621-166-02
D/9Drawing number reference only
U.S. Government activity
Related Parts
4730-01-325-4010POSSIBLE MATCH
ELBOW,FLANGE TO PIPE
2621-166-02 PIECE R31
4730-01-325-9020POSSIBLE MATCH
ELBOW,FLANGE TO PIPE
2621-166-02 PIECE 202MOD
4730-01-329-2137POSSIBLE MATCH
ELBOW,PIPE
2621-166-02 PC-140
4730-01-329-2138POSSIBLE MATCH
ELBOW,PIPE
2621-166-02 PC-142
4730-01-329-2163POSSIBLE MATCH
ELBOW,PIPE TO BOSS
2621-166-02 ASSY-182
Frequently Asked Questions
What is NSN 4730-01-325-4009?
NSN 4730-01-325-4009 is a Elbow,flange to Pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What NSN replaces 4730-01-325-4009?
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-325-4010, 4730-01-325-9020, 4730-01-329-2137. Verify interchangeability with system specifications before substitution.
What are the specifications of 4730-01-325-4009?
Key specifications for 4730-01-325-4009: Flange Shape: ROUND WITH HOLES SECOND END; Flow Angle: 90.0 DEGREES; Nominal Pipe Size Accommodated: 1.500 INCHES FIRST END IN; Flange Face Design: PLAIN WITH GASKET GROOVE SECOND END. 15 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-325-4009 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.