The Nut,union, cataloged under National Stock Number 4730-00-904-0876, 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 Nassau Tool Works, Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-904-0876 |
| Primary Part Number | A414241-3 |
| Item Name | Nut,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Nassau Tool Works, Inc |
| Status | ACTIVE |
| Width Across Flats | 1.375 INCHES NOMINAL IN |
| Shoulder Step Width | 0.250 INCHES NOMINAL IN |
| Shoulder Width | 0.155 INCHES NOMINAL IN |
| Thread Series | UN |
| Material Document and Classification | IL-S-6758,COND D4 MIL SPEC 10TH MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.188 INCHES IN |
| Nut Height | 0.938 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| A414241-3 | Nassau Tool Works, Inc (USA) |
| A414241-3 | Ammcon Corp. (USA) |
| A414241-3 | Krobach Mfg. Corp. Dba Krobach Manufacturing Corp (USA) |
| A414241-3 | Duhadaway Tool & Die Shop Inc (USA) |
| A414241-3 | Pre-Mach Inc (USA) |
| A414241-3 | Master Research & Manufacturing, Inc. Dba Master Research & Manufacturing Inc (USA) |
| Reference | Meaning |
|---|---|
| A414241-3 | 5/9 Secondary reference Nuflo, Inc. |
| A414241-3 | 3/2 Design control — primary reference U.S. Government activity |
| A414241-3 | 5/9 Secondary reference Computa-Base-Machining, Inc. |
| EPA21000-274 | 8/1 NATO reproduction reference Naval Group Site De Brest |
| A414241-3 | 5/2 Secondary reference U.S. Government activity |
| A414241-3 | 5/9 Secondary reference Calabrese & Sons, Inc. |
NSN 4730-00-904-0876 is a Nut,union, manufactured by Nassau Tool Works, Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-904-0876 has 6 manufacturer part numbers on file: A414241-3 (Nassau Tool Works, Inc), A414241-3 (Ammcon Corp.), A414241-3 (Krobach Mfg. Corp. Dba Krobach Manufacturing Corp), A414241-3 (Duhadaway Tool & Die Shop Inc), A414241-3 (Pre-Mach Inc) and 1 more.
Key specifications for A414241-3: Width Across Flats: 1.375 INCHES NOMINAL IN; Shoulder Step Width: 0.250 INCHES NOMINAL IN; Shoulder Width: 0.155 INCHES NOMINAL IN; Thread Series: UN. 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.