The Adapter,straight,pipe to Boss, cataloged under National Stock Number 4730-01-326-1426, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-326-1426 |
| Item Name | Adapter,straight,pipe to Boss |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 PREFORMED PACKING |
| Nominal Pipe Size Accommodated | 1.500 INCHES FIRST END IN |
| Connection Style | GROOVED (TUBE) FIRST END |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END |
| Nominal Overall Length | 13.310 INCHES IN |
| Connection Type | THREADED EXTERNAL BOSS SECOND END |
| Connection Type | UNTHREADED EXTERNAL PIPE FIRST END |
| Material Document and Classification | MIL-C-15726 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Operating Pressure | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 1.875 INCHES SECOND END IN |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE STD FIRST END |
| Media for Which Designed | WATER SINGLE RESPONSE |
| Thread Class | 2A SECOND END A |
| Thread Quantity Per Inch | 12 SECOND END |
| Material | NICKEL ALLOY OVERALL |
| Thread Series Designator | UN 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 |
| Reference | Meaning |
|---|---|
| 508-1685844 ITEM F53 | 5/2 Secondary reference U.S. Government activity |
| 508-1685844 | D/9 Drawing number reference only U.S. Government activity |
| 2621-021-01 ASSY 104 | 3/2 Design control — primary reference U.S. Government activity |
| 2621-021-01 | D/9 Drawing number reference only U.S. Government activity |
| 1685844 ITEM F53 | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-326-1426 is a Adapter,straight,pipe to Boss, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-326-1426: Furnished Items and Quantity: 2 PREFORMED PACKING; Nominal Pipe Size Accommodated: 1.500 INCHES FIRST END IN; Connection Style: GROOVED (TUBE) FIRST END; Connection Style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END. 16 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.