The Tee,tube, cataloged under National Stock Number 4730-00-555-3758, 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 Swagelok Co. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-555-3758 |
| Primary Part Number | A400-3 |
| Item Name | Tee,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Furnished Items and Quantity | 3 SOCKET-BAND TYPE SEGMENT AND 3 FERRULE SLEEVE |
| Connection Style | FLARELESS (TUBE) ALL ENDS |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Leg Length | 0.719 INCHES NOMINAL THIRD END IN |
| Leg Length | 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM FIRST END IN |
| Leg Length | 0.719 INCHES MINIMUM AND 0.781 INCHES MAXIMUM SECOND END IN |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 20.0 DEGREES ALL ENDS |
| Surface Treatment | ANODIZE OVERALL |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Thread Class | 3A ALL ENDS A |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNF 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 |
|---|---|
| 4-4-4JBZ-A | Parker-Hannifin Corporation Div Instrumentation Products Division (USA) |
| A400-3 PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 4-4-4JBZD | 5/9 Secondary reference Parker-Hannifin Corporation Div Instrumentation Products Division |
NSN 4730-00-555-3758 is a Tee,tube, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-555-3758 has 2 manufacturer part numbers on file: 4-4-4JBZ-A (Parker-Hannifin Corporation Div Instrumentation Products Division), A400-3 (Swagelok Co).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-184-1785, 6625-01-652-2535. Verify interchangeability with system specifications before substitution.
Key specifications for A400-3: Furnished Items and Quantity: 3 SOCKET-BAND TYPE SEGMENT AND 3 FERRULE SLEEVE; Connection Style: FLARELESS (TUBE) ALL ENDS; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES ALL ENDS IN. 14 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.