PartsTable TECHNICAL DATA SHEET
NSN 4730-01-280-8578Government record, cited

Tee, Pipe4730-01-280-8578

NSN 4730-01-280-8578 · NIIN 012808578
FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings
Government record, cited
Also searched as  4730-01-280-8578 · 4730012808578 · NIIN 012808578 · 01-280-8578 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · 262175402 PC 191 · 2621-754-02 PIECE 191 · 2621-754-02
Nearby stock numbers  ·
Features
  • Tee,pipe — FSC 4730
  • Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN
  • Nominal Pipe Size Accommodated: 0.750 INCHES THIRD END IN
  • Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN
  • Connection Style: SOCKET (PIPE) FIRST END
  • Connection Style: SOCKET (PIPE) SECOND END
  • Connection Style: SOCKET (PIPE) THIRD END
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST END
Identification
  • NSN: 4730-01-280-8578
  • NIIN: 012808578
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description

The Tee,pipe, cataloged under National Stock Number 4730-01-280-8578, 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 18 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-280-8578
Item NameTee,pipe
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
StatusACTIVE
Nominal Pipe Size Accommodated0.500 INCHES SECOND END IN
Nominal Pipe Size Accommodated0.750 INCHES THIRD END IN
Nominal Pipe Size Accommodated0.750 INCHES FIRST END IN
Connection StyleSOCKET (PIPE) FIRST END
Connection StyleSOCKET (PIPE) SECOND END
Connection StyleSOCKET (PIPE) THIRD END
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Connection TypeUNTHREADED INTERNAL PIPE THIRD END
Connection TypeUNTHREADED INTERNAL PIPE SECOND END
Material Document and ClassificationQQ-S-763,CL304,COND-A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Leg Length1.320 INCHES MINIMUM AND 1.440 INCHES MAXIMUM FIRST END IN
Leg Length1.320 INCHES MINIMUM AND 1.440 INCHES MAXIMUM SECOND END IN
Leg Length1.320 INCHES MINIMUM AND 1.440 INCHES MAXIMUM THIRD END IN
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 80 FIRST END
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 80 SECOND END
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 80 THIRD END
MaterialSTEEL COMP 304 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-307-01272621-754-02 POSSIBLE MATCH
TEE,FLANGE
Possible match (shared part number)Derbyshire Machine & Tool Co
4730-01-318-28402621-754-02 PIECE 207 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-318-96842621-754-02 PIECE 206 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-319-34792621-754-02 PIECE 125 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-328-612514-04-1606 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-328-61262621-754-02 PC-85 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-328-612716-06-7510 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-328-612816-06-7515 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-329-72292621-754-02 PC 151 POSSIBLE MATCH
TEE,PIPE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-329-7230262175402-0091 POSSIBLE MATCH
TEE,PIPE
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
ReferenceMeaning
262175402 PC 191 5/2 Secondary reference
U.S. Government activity
2621-754-02 PIECE 191 3/2 Design control — primary reference
U.S. Government activity
2621-754-02 D/9 Drawing number reference only
U.S. Government activity
Related Parts
4730-01-307-0127POSSIBLE MATCH
TEE,FLANGE
2621-754-02
4730-01-318-2840POSSIBLE MATCH
TEE,PIPE
2621-754-02 PIECE 207
4730-01-318-9684POSSIBLE MATCH
TEE,PIPE
2621-754-02 PIECE 206
4730-01-319-3479POSSIBLE MATCH
TEE,PIPE
2621-754-02 PIECE 125
4730-01-328-6125POSSIBLE MATCH
TEE,PIPE
14-04-1606
4730-01-328-6126POSSIBLE MATCH
TEE,PIPE
2621-754-02 PC-85
4730-01-328-6127POSSIBLE MATCH
TEE,PIPE
16-06-7510
4730-01-328-6128POSSIBLE MATCH
TEE,PIPE
16-06-7515
4730-01-329-7229POSSIBLE MATCH
TEE,PIPE
2621-754-02 PC 151
4730-01-329-7230POSSIBLE MATCH
TEE,PIPE
262175402-0091

Frequently Asked Questions

What is NSN 4730-01-280-8578?

NSN 4730-01-280-8578 is a Tee,pipe, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What NSN replaces 4730-01-280-8578?

10 possible matches (shared part number, not a government interchangeability claim): 4730-01-307-0127, 4730-01-318-2840, 4730-01-318-9684. Verify interchangeability with system specifications before substitution.

What are the specifications of 4730-01-280-8578?

Key specifications for 4730-01-280-8578: Nominal Pipe Size Accommodated: 0.500 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 0.750 INCHES THIRD END IN; Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) FIRST END. 18 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-280-8578 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.
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