4730-01-307-0125 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Elbow,flange to Pipe — FSC 4730
Flange Shape: ROUND WITH HOLES SECOND END
Nominal Pipe Size Accommodated: 5.000 INCHES FIRST END IN
Flange Face Design: RECESSED STRAIGHT SECOND END
Connection Style: SOCKET W/ GROVE (PIPE) FIRST END
Bolt Circle Nominal Diameter: 8.875 INCHES SECOND END IN
Connection Type: UNTHREADED INTERNAL PIPE FIRST END
Connection Type: FLANGE SECOND END
Identification
NSN: 4730-01-307-0125
NIIN: 013070125
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 4730-01-307-0125, 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 17 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Bolt Hole Nominal Diameter
0.688 INCHES SECOND END IN
Operating Pressure
250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Leg Length
5.310 INCHES MINIMUM AND 5.440 INCHES MAXIMUM FIRST END IN
Leg Length
5.810 INCHES MINIMUM AND 5.940 INCHES MAXIMUM SECOND END IN
Nominal Outside Diameter
10.120 INCHES SECOND END IN
Bolt Hole Quantity
12 SECOND END
Material
COPPER ALLOY OVERALL
Nominal Thickness
1.220 INCHES SECOND END IN
Recess Nominal Diameter
6.321 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 Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-327-14044687601 ITEM F19POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-327-14054687601 PIECE 16POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-327-14064687601 PIECE 70POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-327-14074687601 PIECE 205POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-329-4982262116603-0006POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-330-59624687601 PC 209POSSIBLE MATCH
ELBOW,PIPE
Possible match (shared part number)Naval Ship Systems Command
5330-01-726-2314845-4687601 ITEM 153POSSIBLE MATCH
GASKET
Possible match (shared part number)Naval Ship Systems Command
5330-01-731-0569845-4687601-153POSSIBLE MATCH
RETAINER,SEAL
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
4687601-0123
5/2Secondary reference
U.S. Government activity
2621-166-03 PIECE 123
3/2Design control — primary reference
U.S. Government activity
4687601
D/9Drawing number reference only
U.S. Government activity
2621-166-03
D/9Drawing number reference only
U.S. Government activity
Related Parts
4730-01-327-1404POSSIBLE MATCH
ELBOW,PIPE
4687601 ITEM F19
4730-01-327-1405POSSIBLE MATCH
ELBOW,PIPE
4687601 PIECE 16
4730-01-327-1406POSSIBLE MATCH
ELBOW,PIPE
4687601 PIECE 70
4730-01-327-1407POSSIBLE MATCH
ELBOW,PIPE
4687601 PIECE 205
4730-01-329-4982POSSIBLE MATCH
ELBOW,PIPE
262116603-0006
4730-01-330-5962POSSIBLE MATCH
ELBOW,PIPE
4687601 PC 209
5330-01-726-2314POSSIBLE MATCH
GASKET
845-4687601 ITEM 153
5330-01-731-0569POSSIBLE MATCH
RETAINER,SEAL
845-4687601-153
Frequently Asked Questions
What is NSN 4730-01-307-0125?
NSN 4730-01-307-0125 is a Elbow,flange to Pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What NSN replaces 4730-01-307-0125?
8 possible matches (shared part number, not a government interchangeability claim): 4730-01-327-1404, 4730-01-327-1405, 4730-01-327-1406. Verify interchangeability with system specifications before substitution.
What are the specifications of 4730-01-307-0125?
Key specifications for 4730-01-307-0125: Flange Shape: ROUND WITH HOLES SECOND END; Nominal Pipe Size Accommodated: 5.000 INCHES FIRST END IN; Flange Face Design: RECESSED STRAIGHT SECOND END; Connection Style: SOCKET W/ GROVE (PIPE) FIRST END. 17 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-307-0125 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.