The Tee,pipe, cataloged under National Stock Number 4730-00-263-3722, 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 Schramm, Inc.. 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-263-3722 |
| Primary Part Number | PT53 |
| Item Name | Tee,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Schramm, Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material Document and Classification | ASTM A197 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Operating Pressure | 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS |
| Leg Length | 1.520 INCHES MINIMUM AND 1.705 INCHES MAXIMUM FIRST END IN |
| Leg Length | 1.520 INCHES MINIMUM AND 1.705 INCHES MAXIMUM SECOND END IN |
| Leg Length | 1.750 INCHES MINIMUM AND 1.900 INCHES MAXIMUM THIRD END IN |
| Nominal Thread Size | 1.500 INCHES FIRST END IN |
| Nominal Thread Size | 1.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES THIRD END IN |
| Specification/standard Data | 80204-B16.9 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Maximum Operating Temp | 150.0 FAHRENHEIT SECOND RESPONSE DEGF |
| Maximum Operating Temp | 500.0 FAHRENHEIT FIRST RESPONSE DEGF |
| Nondefinitive Spec/std Data | 2 TYPE |
| Surface Treatment | ZINC OVERALL |
| Media for Which Designed | WATER-OIL-GAS SECOND RESPONSE |
| Media for Which Designed | STEAM FIRST RESPONSE |
| Material | IRON OR STEEL OVERALL |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| PT53 PRIMARY | Schramm, Inc. (USA) |
| Reference | Meaning |
|---|---|
| WWP521 | 5/9 Secondary reference U.S. Government activity |
| WWP521 | 5/9 Secondary reference Compton Forge Inc |
| WWP521 | 5/9 Secondary reference U.S. Government activity |
| 0000447 | 5/2 Secondary reference U.S. Government activity |
| ASME B16.3 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
| WWP521 | 5/9 Secondary reference Mindeco Corp |
| FIG632 1 1/2X3/4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-263-3722 is a Tee,pipe, manufactured by Schramm, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-263-3722 has 1 manufacturer part number on file: PT53 (Schramm, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 2540-01-096-9695, 6525-01-472-5896. Verify interchangeability with system specifications before substitution.
Key specifications for PT53: Surface Treatment Document and Classification: ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Material Document and Classification: ASTM A197 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 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.