The Tee,tube, cataloged under National Stock Number 4730-01-581-8728, 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 Sps Technologies, Llc Dba Airdrome Precision Components. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-581-8728 |
| Primary Part Number | AP12550T04H |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Sps Technologies, Llc Dba Airdrome Precision Components |
| Status | ACTIVE |
| Connection Style | PLAIN (TUBE) SECOND END |
| Connection Style | PLAIN (TUBE) FIRST END |
| Connection Style | SWIVEL NUT, COMPRESSION (TUBE) THIRD END |
| Connection Type | THREADED INTERNAL TUBE THIRD END |
| Connection Type | GROOVED COUPLING FIRST END |
| Connection Type | GROOVED COUPLING SECOND END |
| Style Designator | TEE |
| Material Document and Classification | 3AL-2.5V PER AMS4944 OR SIMILAR ASSN STD SINGLE MATERIAL RESPONSE NUT V |
| Material Document and Classification | AMS4921 ASSN STD SINGLE MATERIAL RESPONSE BODY |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Material | TITANIUM ALLOY NUT |
| Material | TITANIUM BODY |
| 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 |
|---|---|
| AP12550T04H PRIMARY | Sps Technologies, Llc Dba Airdrome Precision Components (USA) |
| Reference | Meaning |
|---|---|
| AP12550 | 5/1 Secondary reference Sps Technologies, Llc Dba Airdrome Precision Components |
NSN 4730-01-581-8728 is a Tee,tube, manufactured by Sps Technologies, Llc Dba Airdrome Precision Components, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-581-8728 has 1 manufacturer part number on file: AP12550T04H (Sps Technologies, Llc Dba Airdrome Precision Components).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-581-8732. Verify interchangeability with system specifications before substitution.
Key specifications for AP12550T04H: Connection Style: PLAIN (TUBE) SECOND END; Connection Style: PLAIN (TUBE) FIRST END; Connection Style: SWIVEL NUT, COMPRESSION (TUBE) THIRD END; Connection Type: THREADED INTERNAL TUBE THIRD END. 13 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.