The Tee,pipe to Tube, cataloged under National Stock Number 4730-00-138-4004, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-138-4004 |
| Primary Part Number | 11648496 |
| Item Name | Tee,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Connection Style | INVERTED FLARE (TUBE) THIRD END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Material Document and Classification | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OR ASTMB145 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES THIRD END IN |
| Leg Length | 0.690 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.690 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.438 INCHES THIRD END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Seat Angle | 45.0 DEGREES THIRD END |
| Seat Angle | 45.0 DEGREES FIRST END |
| Thread Class | 2B FIRST END |
| Thread Class | 2B THIRD END |
| Thread Quantity Per Inch | 24 FIRST END |
| Thread Quantity Per Inch | 24 THIRD END |
| Material | COPPER ALLOY 844 OVERALL |
| Thread Series Designator | UNS THIRD END |
| Thread Series Designator | NPTF SECOND END |
| Thread Series Designator | UNS FIRST END |
| 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 |
|---|---|
| 4487 | Lincoln Brass Works Inc (USA) |
| 11648496 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 4730001384004 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 4730-00-138-4004 is a Tee,pipe to Tube, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-138-4004 has 2 manufacturer part numbers on file: 4487 (Lincoln Brass Works Inc), 11648496 (U S Army Tank Automotive Command Amsta-Im-Mm).
6 possible matches (shared part number, not a government interchangeability claim): 2910-00-872-9280, 2640-01-419-6200, 5998-01-433-1239. Verify interchangeability with system specifications before substitution.
Key specifications for 11648496: Connection Style: INVERTED FLARE (TUBE) FIRST END; Connection Style: INVERTED FLARE (TUBE) THIRD END; Connection Style: PLAIN (PIPE) SECOND END; Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OR ASTMB145 ASSN STD SINGLE 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.