FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as4730-01-307-0033 ·
4730013070033 ·
NIIN 013070033 ·
01-307-0033 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 262179105-0117A · 2621-791-05 · 2621-791-05 PIECE117
Nearby stock numbers← 4730-01-307-0032 Tailpiece, Union
·
4730-01-307-0034 Tailpiece, Union →
4730-01-307-0033 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Tailpiece,union — FSC 4730
Nominal Pipe Size Designation: 0.250 INCHES IN
Flange Thickness: 0.100 INCHES NOMINAL IN
End Connection Type: WELDED
Seat Type: GASKET
Material: COPPER
Flange Outside Diameter: 0.731 INCHES NOMINAL IN
Working Pressure and Service Type: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM WATER LBS
Identification
NSN: 4730-01-307-0033
NIIN: 013070033
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description
The Tailpiece,union, cataloged under National Stock Number 4730-01-307-0033, 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 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM WATER LBS
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 Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-307-84292621-791-05 PIECE 71X2.75POSSIBLE MATCH
UNION,PIPE TO TUBE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-307-84302621-791-05 PIECE 71X5.25POSSIBLE MATCH
UNION,PIPE TO TUBE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-307-84312621-791-05 PIECE 71X3.62POSSIBLE MATCH
UNION,PIPE TO TUBE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-307-84322621-791-05 PIECE 71X4.37POSSIBLE MATCH
UNION,PIPE TO TUBE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-307-84372621-791-05 ASSY 120POSSIBLE MATCH
REDUCER,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-307-89252621-791-05 PIECE 71POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-309-51192621-791-05 PIECE 142POSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-314-8911845-4775990 PIECE 17APOSSIBLE MATCH
TAILPIECE,UNION
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-334-12032621-791-05 PIECE 70POSSIBLE MATCH
TAILPIECE,UNION
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
262179105-0117A
5/2Secondary reference
U.S. Government activity
2621-791-05
D/9Drawing number reference only
U.S. Government activity
2621-791-05 PIECE117
3/2Design control — primary reference
U.S. Government activity
Related Parts
4730-01-307-8429POSSIBLE MATCH
UNION,PIPE TO TUBE
2621-791-05 PIECE 71X2.75
4730-01-307-8430POSSIBLE MATCH
UNION,PIPE TO TUBE
2621-791-05 PIECE 71X5.25
4730-01-307-8431POSSIBLE MATCH
UNION,PIPE TO TUBE
2621-791-05 PIECE 71X3.62
4730-01-307-8432POSSIBLE MATCH
UNION,PIPE TO TUBE
2621-791-05 PIECE 71X4.37
4730-01-307-8437POSSIBLE MATCH
REDUCER,PIPE
2621-791-05 ASSY 120
4730-01-307-8925POSSIBLE MATCH
TAILPIECE,UNION
2621-791-05 PIECE 71
4730-01-309-5119POSSIBLE MATCH
TAILPIECE,UNION
2621-791-05 PIECE 142
4730-01-314-8911POSSIBLE MATCH
TAILPIECE,UNION
845-4775990 PIECE 17A
4730-01-334-1203POSSIBLE MATCH
TAILPIECE,UNION
2621-791-05 PIECE 70
Frequently Asked Questions
What is NSN 4730-01-307-0033?
NSN 4730-01-307-0033 is a Tailpiece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What NSN replaces 4730-01-307-0033?
9 possible matches (shared part number, not a government interchangeability claim): 4730-01-307-8429, 4730-01-307-8430, 4730-01-307-8431. Verify interchangeability with system specifications before substitution.
What are the specifications of 4730-01-307-0033?
Key specifications for 4730-01-307-0033: Nominal Pipe Size Designation: 0.250 INCHES IN; Flange Thickness: 0.100 INCHES NOMINAL IN; End Connection Type: WELDED; Overall Length: 1.000 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-307-0033 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.