The Locknut,tube Fitting, cataloged under National Stock Number 4730-01-073-7855, 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 Greer Stop Nut, Inc.. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-073-7855 |
| Primary Part Number | 12267739 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Greer Stop Nut, Inc. |
| Status | ACTIVE |
| Width Across Flats | 2.865 INCHES MINIMUM AND 2.887 INCHES MAXIMUM IN |
| Packing Recess Diameter | 2.323 INCHES MINIMUM AND 2.329 INCHES MAXIMUM IN |
| Thread Series | UNS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.359 INCHES IN |
| Nut Height | 0.484 INCHES NOMINAL IN |
| Nut Style | TUBE FITTING LOCKNUT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL EXCEPT INSERT |
| Nominal Tube Outside Diameter | 2.323 INCHES IN |
| Packing Recess Depth | 0.089 INCHES MINIMUM AND 0.119 INCHES MAXIMUM 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 |
|---|---|
| 12267739 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 12267739 PRIMARY | Greer Stop Nut, Inc. (USA) |
| BR4664-N12 PRIMARY | Esna, Llc (USA) |
| 12267739 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| BR4664-N12 | 5/9 Secondary reference Harvard Industries Inc |
| SL7065N12 | 5/9 Secondary reference U.S. Government activity |
| 49N7974-2.360-18 | 5/9 Secondary reference Greer Stop Nut, Inc. |
| DAX11236 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 4730-01-073-7855 is a Locknut,tube Fitting, manufactured by Greer Stop Nut, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-073-7855 has 4 manufacturer part numbers on file: 12267739 (Allison Transmission Inc Dba Allison Transmission, Inc), 12267739 (Greer Stop Nut, Inc.), BR4664-N12 (Esna, Llc), 12267739 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12267739: Width Across Flats: 2.865 INCHES MINIMUM AND 2.887 INCHES MAXIMUM IN; Packing Recess Diameter: 2.323 INCHES MINIMUM AND 2.329 INCHES MAXIMUM IN; Thread Series: UNS; Thread Direction: RIGHT-HAND. 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.