The Ring,pitch Lock Assembly, cataloged under National Stock Number 1650-01-100-2921, is classified within Federal Supply Class 1650 (Aircraft Hydraulic, Vacuum, and De-icing System Components) of the Aircraft Components and Accessories group. The manufacturer of record is Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1650-01-100-2921 |
| Primary Part Number | ASA10579-10 |
| Item Name | Ring,pitch Lock Assembly |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM BRONZE AMS 4640,1.743 IN. OD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 65651-11388-109 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| ASA10579-10 PRIMARY | Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent (USA) |
| Reference | Meaning |
|---|---|
| ASA10579-6 | 5/9 Secondary reference Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent |
NSN 1650-01-100-2921 is a Ring,pitch Lock Assembly, manufactured by Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-01-100-2921 has 2 manufacturer part numbers on file: 65651-11388-109 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), ASA10579-10 (Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent).
Key specifications for ASA10579-10: General Characteristics Item Description: ALUMINUM BRONZE AMS 4640,1.743 IN. OD IN; End Item Identification: AIRCRAFT MODEL CH-53D. 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 1650-01-100-2921 has DEMIL Code B. 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.