The Packing Nut, cataloged under National Stock Number 4730-01-170-4001, 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 The Boeing Company Div Defense. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-170-4001 |
| Primary Part Number | 74A410861-2003 |
| Item Name | Packing Nut |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Width Across Flats | 5.830 INCHES NOMINAL IN |
| Thread Length | 0.215 INCHES NOMINAL AND 0.812 INCHES NOMINAL IN |
| Style Designator | IRREGULAR |
| Material Document and Classification | MIL-S-8844,CL 3,COND E MIL SPEC SINGLE MATERIAL RESPONSE |
| Thread Direction | RIGHT-HAND |
| Casehardening Indicator | NOT CASEHARDENED |
| Thread Size | 5.500-16 AND 5.500-12 |
| Screw Thread Series Designator | UNIFIED NATIONAL JOINT (UNJ) |
| Thread Class | 3A A |
| Screw Thread Location | EXTERNAL |
| Material | STEEL UNS K44220 |
| Smallest Inside Diameter | 5.003 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 74A410861-2003 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 74A410861-2003 | Safran Landing Systems Canada Inc. (CAN) |
| 74A410861-2003 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A410861-2003 | E.a. - Maestranza Aerea De Madrid (ESP) |
| 74A410861-2003 | Nassau Tool Works, Inc (USA) |
| Reference | Meaning |
|---|---|
| 74A410861-2003 | 5/9 Secondary reference Heroux-Devtek Inc |
| 74A410861-2003 | 5/9 Secondary reference Blair Industries Inc |
| 74A410861-2003 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
| 10108851 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A410861-2003 | C/1 Advisory reference — outside the item-of-supply concept Israel Aerospace Industries Ltd.shl-Aero Assemblies Division |
| 74A410861-2003 | 5/1 Secondary reference Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc |
| 1967C-20A | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A410861-2003 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 74A410861-2003 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A410861-2003 | 5/2 Secondary reference U.S. Government activity |
| 74A410861-2003 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A410861-2003 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
NSN 4730-01-170-4001 is a Packing Nut, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-170-4001 has 5 manufacturer part numbers on file: 74A410861-2003 (Cm Manufacturing Inc Dba Cm Manufacturing Inc), 74A410861-2003 (Safran Landing Systems Canada Inc.), 74A410861-2003 (The Boeing Company Div Defense), 74A410861-2003 (E.a. - Maestranza Aerea De Madrid), 74A410861-2003 (Nassau Tool Works, Inc).
Key specifications for 74A410861-2003: Width Across Flats: 5.830 INCHES NOMINAL IN; Thread Length: 0.215 INCHES NOMINAL AND 0.812 INCHES NOMINAL IN; Style Designator: IRREGULAR; Material Document and Classification: MIL-S-8844,CL 3,COND E MIL SPEC SINGLE MATERIAL RESPONSE. 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.