The Coupling,tube, cataloged under National Stock Number 4730-00-533-7910, 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 Circor Pumps North America Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-533-7910 |
| Primary Part Number | S427A |
| Item Name | Coupling,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Connection Style | GROOVED (TUBE) ALL ENDS |
| Tubing Wall Nominal Thickness for Which Designed | 0.125 INCHES ALL ENDS IN |
| Nominal Overall Length | 1.250 INCHES IN |
| Connection Type | UNTHREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | PLAIN |
| Nominal Outside Diameter Tube Accommodated | 0.626 INCHES ALL ENDS IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| S427A9219 | Circor Pumps North America Llc (USA) |
| S427A PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| S427A9219 | 5/9 Secondary reference Siemens Energy, Inc. |
| S427A-0219 | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy, Inc. |
| S427A | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 4730-00-533-7910 is a Coupling,tube, manufactured by Circor Pumps North America Llc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-533-7910 has 2 manufacturer part numbers on file: S427A9219 (Circor Pumps North America Llc), S427A (Circor Pumps North America Llc).
Key specifications for S427A: Connection Style: GROOVED (TUBE) ALL ENDS; Tubing Wall Nominal Thickness for Which Designed: 0.125 INCHES ALL ENDS IN; Nominal Overall Length: 1.250 INCHES IN; Connection Type: UNTHREADED EXTERNAL TUBE ALL ENDS. 7 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.