The Packing Nut, cataloged under National Stock Number 4730-00-722-3271, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-722-3271 |
| Primary Part Number | 10866939 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Length to Shoulder | 0.875 INCHES NOMINAL IN |
| Width Across Flats | 1.063 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Style Designator | HEXAGON, INTERNAL THREAD, SHOULDERED |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 1IN-12 IN |
| Screw Thread Series Designator | UNF |
| Thread Class | 2B |
| Screw Thread Location | INTERNAL |
| Material | STEEL COMP 1020 |
| Smallest Inside Diameter | 0.510 INCHES MINIMUM AND 0.520 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 |
|---|---|
| 10866939 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 4730007223271 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 4730-00-722-3271 is a Packing Nut, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-722-3271 has 1 manufacturer part number on file: 10866939 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10866939: Length to Shoulder: 0.875 INCHES NOMINAL IN; Width Across Flats: 1.063 INCHES NOMINAL IN; Thread Length: 0.750 INCHES NOMINAL IN; Style Designator: HEXAGON, INTERNAL THREAD, SHOULDERED. 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.