The Retainer,valve Spring, cataloged under National Stock Number 1650-00-446-2543, 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 Northrop Grumman Systems Corporation. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1650-00-446-2543 |
| Primary Part Number | 134HM10069-1 |
| Item Name | Retainer,valve Spring |
| FSC / FSG | 1650 / 16 — Aircraft Hydraulic, Vacuum, and De-icing System Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | CRES; 0.433 IN. THK; HEX HD FLANGE 0.125 IN. THK,0.812 IN. ACROSS FLATS; 0.562-18 IN. UNF CL 3A THD END W/ 0.343 IN. MAX DIA BORE 0.273 IN. DP A |
| 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 |
|---|---|
| 134HM10069-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 134HM10069-1 | 5/9 Secondary reference S & L Aerospace Metals Llc |
| 134HM10069-1 | 5/9 Secondary reference Tek Precision Co Limited |
| 134HM10069 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| 134HM10069-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 1650-00-446-2543 is a Retainer,valve Spring, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1650, Aircraft Hydraulic, Vacuum, and De-icing System Components. Status: active.
NSN 1650-00-446-2543 has 1 manufacturer part number on file: 134HM10069-1 (Northrop Grumman Systems Corporation).
Key specifications for 134HM10069-1: General Characteristics Item Description: CRES; 0.433 IN. THK; HEX HD FLANGE 0.125 IN. THK,0.812 IN. ACROSS FLATS; 0.562-18 IN. UNF CL 3A THD END W/ 0.343 IN. MAX DIA BORE 0.273 IN. DP A; End Item Identification: 1650-00-772-3423. 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.
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.