The Elbow,tube, cataloged under National Stock Number 4730-01-139-1640, 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 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-139-1640 |
| Primary Part Number | NY400-8-0006 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Swagelok Co |
| Status | ACTIVE |
| Flow Angle | 90.0 DEGREES |
| Connection Style | SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END ALL ENDS |
| Connection Type | THREADED INTERNAL TUBE ALL ENDS |
| Material Document and Classification | MIL-C-27500 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES ALL ENDS IN |
| Leg Length | 0.700 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.922 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.438 INCHES ALL ENDS IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Thread Class | 3B ALL ENDS |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS |
| 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 |
|---|---|
| NY400-8-0006 PRIMARY | Swagelok Co (USA) |
| 7M494N4 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 7M494 | D/9 Drawing number reference only The Boeing Company Div Defense |
| 10108724 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4730-01-139-1640 is a Elbow,tube, manufactured by Swagelok Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-139-1640 has 2 manufacturer part numbers on file: NY400-8-0006 (Swagelok Co), 7M494N4 (The Boeing Company Div Defense).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-139-4681, 4730-01-146-8858. Verify interchangeability with system specifications before substitution.
Key specifications for NY400-8-0006: Flow Angle: 90.0 DEGREES; Connection Style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END ALL ENDS; Connection Type: THREADED INTERNAL TUBE ALL ENDS; Material Document and Classification: MIL-C-27500 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 12 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.