The Union,pipe, cataloged under National Stock Number 4730-00-877-9606, 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 Bec Systems Llc Dba Bec Machine Products. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-877-9606 |
| Primary Part Number | 859FFU-3:CPL-551 |
| Item Name | Union,pipe |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Bec Systems Llc Dba Bec Machine Products |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 PREFORMED PACKING AND 2 BRAZING RING |
| Nominal Pipe Size Accommodated | 0.500 INCHES ALL ENDS IN |
| Connection Style | STREAMLINED W/ TWO BRAZING RINGS (PIPE) ALL ENDS |
| Coupling Flange Shape | HEXAGON |
| Nominal Overall Length | 1.980 INCHES IN |
| Connection Type | UNTHREADED INTERNAL PIPE ALL ENDS |
| Style Designator | UNTHREADED |
| Operating Pressure | 1500.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Seat Type | GASKET |
| Maximum Operating Temp | 65.6 CELSIUS SINGLE RESPONSE DEGC |
| Pipe Wall Thickness Designation for Which Designed | SCHEDULE STD ALL ENDS |
| Media for Which Designed | WATER-OIL-GAS SINGLE RESPONSE |
| Material | COPPER ALLOY OVERALL |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| 859FFU-3:CPL-551 PRIMARY | Bec Systems Llc Dba Bec Machine Products (USA) |
| Reference | Meaning |
|---|---|
| 810-1385859PC1T03-6 1/2IN | 5/2 Secondary reference U.S. Government activity |
| 810-1385859PC1T03-6 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4730-00-877-9606 is a Union,pipe, manufactured by Bec Systems Llc Dba Bec Machine Products, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-877-9606 has 1 manufacturer part number on file: 859FFU-3:CPL-551 (Bec Systems Llc Dba Bec Machine Products).
2 possible matches (shared part number, not a government interchangeability claim): 4730-00-877-9607, 4730-00-877-9609. Verify interchangeability with system specifications before substitution.
Key specifications for 859FFU-3:CPL-551: Furnished Items and Quantity: 1 PREFORMED PACKING AND 2 BRAZING RING; Nominal Pipe Size Accommodated: 0.500 INCHES ALL ENDS IN; Connection Style: STREAMLINED W/ TWO BRAZING RINGS (PIPE) ALL ENDS; Coupling Flange Shape: HEXAGON. 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.