The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-304-3552, 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 Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-304-3552 |
| Primary Part Number | 120-01304-000 |
| Item Name | Adapter,straight,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 BULKHEAD NUT AND 1 TUBE COUPLING NUT W/SLEEVE |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Nominal Overall Length | 2.040 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Seat Angle | 20.0 DEGREES FIRST END |
| Thread Class | 2A FIRST END A |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | NPT FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 120-01304-000 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| 4BCF4316 PRIMARY | Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok (USA) |
| 4-4 GH2BZ-SS | Parker-Hannifin Corporation Div Instrumentation Products Division (USA) |
| SS-400-71-4 PRIMARY | Swagelok Co (USA) |
| Reference | Meaning |
|---|---|
| 120-07526-002 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 4-4-GH2BZ-S | C/1 Advisory reference — outside the item-of-supply concept Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 120-01304 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 13229E0408 | D/9 Drawing number reference only U.S. Government activity |
| 120-07526-2 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 400-71-4-316 | 5/9 Secondary reference Swagelok Co |
| 120-01304-000 | 5/9 Secondary reference Aqua-Chem, Inc. |
NSN 4730-00-304-3552 is a Adapter,straight,pipe to Tube, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-304-3552 has 4 manufacturer part numbers on file: 120-01304-000 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), 4BCF4316 (Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok), 4-4 GH2BZ-SS (Parker-Hannifin Corporation Div Instrumentation Products Division), SS-400-71-4 (Swagelok Co).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-570-5355. Verify interchangeability with system specifications before substitution.
Key specifications for 120-01304-000: Furnished Items and Quantity: 1 BULKHEAD NUT AND 1 TUBE COUPLING NUT W/SLEEVE; Connection Style: FLARELESS (TUBE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END; Nominal Overall Length: 2.040 INCHES 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.
NSN 4730-00-304-3552 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.