The Nut,tube Coupling, cataloged under National Stock Number 4730-01-255-9953, 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 Western Enterprises Div of Scott and Fetzer Co. Government technical data includes 11 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-255-9953 |
| Primary Part Number | SS-347-2 |
| Item Name | Nut,tube Coupling |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Western Enterprises Div of Scott and Fetzer Co |
| Status | ACTIVE |
| Width Across Flats | 1.063 INCHES NOMINAL IN |
| Thread Series | NGO |
| Material Document and Classification | ASTM 1-314 ASSN STD ALL MATERIAL RESPONSES OR A-581 ASSN STD ALL MATERIAL RESPONSES OR 582 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.380 INCHES IN |
| Nut Height | 1.510 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Quantity Per Inch | 14 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Fabrication Method | FORGED |
| Nominal Tube Outside Diameter | 0.500 INCHES IN |
| 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 |
|---|---|
| SS-347-2 PRIMARY | Western Enterprises Div of Scott and Fetzer Co (USA) |
| Reference | Meaning |
|---|---|
| 029976-1 | 7/9 Vendor item drawing reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
| 10108999 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| N85SS | 5/9 Secondary reference Superior Products Div Opw Ces |
| 197C7930 | 7/2 Vendor item drawing reference General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems |
NSN 4730-01-255-9953 is a Nut,tube Coupling, manufactured by Western Enterprises Div of Scott and Fetzer Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-255-9953 has 1 manufacturer part number on file: SS-347-2 (Western Enterprises Div of Scott and Fetzer Co).
Key specifications for SS-347-2: Width Across Flats: 1.063 INCHES NOMINAL IN; Thread Series: NGO; Material Document and Classification: ASTM 1-314 ASSN STD ALL MATERIAL RESPONSES OR A-581 ASSN STD ALL MATERIAL RESPONSES OR 582 ASSN STD ALL MATERIAL RESPONSES OVERALL; Thread Direction: RIGHT-HAND. 11 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.