The Adapter,straight,pipe to Hose, cataloged under National Stock Number 4730-01-490-0309, 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 Thermal Engineering International (usa) Inc.. Government technical data includes 12 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-490-0309 |
| Primary Part Number | 100-D-571 |
| Item Name | Adapter,straight,pipe to Hose |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Thermal Engineering International (usa) Inc. |
| Status | ACTIVE |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Connection Style | PLAIN (TUBE) FIRST END |
| Nominal Inside Diameter Hose Accommodated | 0.6750 INCHES FIRST END IN |
| Nominal Overall Length | 3.6875 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | UNTHREADED EXTERNAL HOSE FIRST END |
| Material Document and Classification | MIL-C-15726F, 90/10 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.3750 INCHES SECOND END IN |
| Specification/standard Data | 81349-MIL-C-19836B GOVERNMENT SPECIFICATION |
| Media for Which Designed | WATER SINGLE RESPONSE |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | NPS SECOND 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 |
|---|---|
| 100-D-571 PRIMARY | Thermal Engineering International (usa) Inc. (USA) |
| 700-D-758 ITEM 1-13 | Thermal Engineering International (usa) Inc. (USA) |
| Reference | Meaning |
|---|---|
| 700-D-758 | 5/9 Secondary reference Thermal Engineering International Usa Inc |
| 700-D-758 | D/9 Drawing number reference only Thermal Engineering International (usa) Inc. |
| 100-D-571 | 5/9 Secondary reference Thermal Engineering International Usa Inc |
| 700-D-758 ITEM 1-13 | 5/9 Secondary reference Thermal Engineering International Usa Inc |
NSN 4730-01-490-0309 is a Adapter,straight,pipe to Hose, manufactured by Thermal Engineering International (usa) Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-490-0309 has 2 manufacturer part numbers on file: 100-D-571 (Thermal Engineering International (usa) Inc.), 700-D-758 ITEM 1-13 (Thermal Engineering International (usa) Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-490-0338. Verify interchangeability with system specifications before substitution.
Key specifications for 100-D-571: Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END; Connection Style: PLAIN (TUBE) FIRST END; Nominal Inside Diameter Hose Accommodated: 0.6750 INCHES FIRST END IN; Nominal Overall Length: 3.6875 INCHES IN. 12 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.