The Tee,pipe, cataloged under National Stock Number 4730-00-263-3700, 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 General Motors Llc Dba General Motors Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 4730-00-263-3700 |
| Primary Part Number | 218251 |
| Item Name | Tee,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | CANCELLED |
| Connection Style | PLAIN (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Material Document and Classification | ASTM A197 ASSN STD SINGLE 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 | 1.310 INCHES NOMINAL FIRST END IN |
| Leg Length | 1.220 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.310 INCHES NOMINAL THIRD END IN |
| Nominal Thread Size | 0.500 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES THIRD END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Maximum Operating Temp | 260.0 CELSIUS FIRST RESPONSE DEGC |
| Maximum Operating Temp | 65.6 CELSIUS SECOND RESPONSE DEGC |
| 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 OVERALL |
| Thread Series Designator | NPS ALL ENDS |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 218251 | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| MS51954-20 | 5/9 Secondary reference U.S. Government activity |
| 4730PL1451130 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| WWP521 | 5/9 Secondary reference U.S. Government activity |
| B16.3 | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
| 218251 | 3/9 Design control — primary reference General Motors Corp |
| WWP521 | 5/9 Secondary reference U.S. Government activity |
| 218251 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 4730-00-263-3700 is a Tee,pipe, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: cancelled.
NSN 4730-00-263-3700 has 1 manufacturer part number on file: 218251 (General Motors Llc Dba General Motors Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5330-00-494-2779, 5935-01-007-9827. Verify interchangeability with system specifications before substitution.
Key specifications for 218251: Connection Style: PLAIN (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Material Document and Classification: ASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS. 19 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.
NSN 4730-00-263-3700 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.