The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-01-425-3899, 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 Swagelok Co. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-425-3899 |
| Primary Part Number | B-810-1-12W |
| Item Name | Adapter,straight,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.500 INCHES FIRST END IN |
| Connection Type | UNTHREADED INTERNAL PIPE FIRST END |
| Connection Type | UNTHREADED EXTERNAL TUBE 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 |
|---|---|
| B-810-1-12W PRIMARY | Swagelok Co (USA) |
| B-810-1-12W | South London Valve & Fitting Company Ltd T/a Swagelok London (GBR) |
| Reference | Meaning |
|---|---|
| B-810-1-12W | 5/9 Secondary reference Swagelok Quick-Connect Co |
NSN 4730-01-425-3899 is a Adapter,straight,pipe to Tube, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-425-3899 has 2 manufacturer part numbers on file: B-810-1-12W (Swagelok Co), B-810-1-12W (South London Valve & Fitting Company Ltd T/a Swagelok London).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-485-8878. Verify interchangeability with system specifications before substitution.
Key specifications for B-810-1-12W: Nominal Pipe Size Accommodated: 0.500 INCHES FIRST END IN; Connection Type: UNTHREADED INTERNAL PIPE FIRST END; Connection Type: UNTHREADED EXTERNAL TUBE SECOND END; End Item Identification: NITROGEN BLANKETING SYSTEM, CRAWFORD FITTING CO. 3 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.