The Lock Ring Assembly, cataloged under National Stock Number 1620-01-113-6074, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Hdi Landing Gear Usa Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1620-01-113-6074 |
| Primary Part Number | 74A450661-1001 |
| Item Name | Lock Ring Assembly |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Hdi Landing Gear Usa Inc |
| Status | ACTIVE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 74A450661-1001 | Nassau Tool Works, Inc (USA) |
| 74A450661-1001 | The Boeing Company Div Services (USA) |
| 74A450661-1001 PRIMARY | Hdi Landing Gear Usa Inc (USA) |
| 74A450661-1001 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 74A450661-1001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 74A450661-1001 | 5/9 Secondary reference R & L Construction Gp |
| 10153696 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A450661-1001 | 5/9 Secondary reference Israel Aerospace Industries Ltd.shl-Aero Assemblies Division |
| 74A450661-1001 | 5/2 Secondary reference U.S. Government activity |
| 1958-C-57 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A450661-1001 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A450661-1001 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
NSN 1620-01-113-6074 is a Lock Ring Assembly, manufactured by Hdi Landing Gear Usa Inc, classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-01-113-6074 has 5 manufacturer part numbers on file: 74A450661-1001 (Nassau Tool Works, Inc), 74A450661-1001 (The Boeing Company Div Services), 74A450661-1001 (Hdi Landing Gear Usa Inc), 74A450661-1001 (Cm Manufacturing Inc Dba Cm Manufacturing Inc), 74A450661-1001 (The Boeing Company Div Defense).
Key specifications for 74A450661-1001: Special Features: SPLINE OUTER PERIPHERY 91 TEETH, PRESSURE ANGLE 45 DEG; 4 HOLES 0.066 IN. DIA THRU; O/A DIM. 5.750 IN. OD BY 0.800 IN. THK IN; Material: STEEL. 1 specification is 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.
NSN 1620-01-113-6074 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.