The Coupling,clamp,pipe, cataloged under National Stock Number 4730-01-643-8255, 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 Dixon Valve & Coupling Co. Government technical data includes 4 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 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 | 4730-01-643-8255 |
| Primary Part Number | 125-A-AL |
| Item Name | Coupling,clamp,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Dixon Valve & Coupling Co |
| Status | ACTIVE |
| Pipe Size Accommodated | 1.250 INCHES NOMINAL IN |
| End Type for Which Designed | GROOVED |
| Working Pressure Rating | 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS |
| Material | ALUMINUM ALLOY HOUSING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-01-643-8255 is a Coupling,clamp,pipe, manufactured by Dixon Valve & Coupling Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-643-8255 has 2 manufacturer part numbers on file: ALDC150A (Blackwood J. Blackwood & Son Pty Ltd), 125-A-AL (Dixon Valve & Coupling Co).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-690-1543. Verify interchangeability with system specifications before substitution.
Key specifications for 125-A-AL: Pipe Size Accommodated: 1.250 INCHES NOMINAL IN; End Type for Which Designed: GROOVED; Working Pressure Rating: 250.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS; Part Name Assigned by Controlling Agency: DIXON/BOSS-LOCK CAN 7 GROOVE TYPE A ADAPTER X FEMALE NPT. 4 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.