The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-914-3432, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-914-3432 |
| Primary Part Number | 128HM30011-1 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| FSC Application Data | CYLINDER,ACTUATING,HYDRAULIC,AIRCRAFT |
| Body Outside Diameter | 2.360 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Material Document and Classification | AMS 5613, TYPE 51410 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.061 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN |
| Inside Chamfer Depth | 0.403 INCHES NOMINAL IN |
| Body Inside Diameter | 2.173 INCHES NOMINAL IN |
| Outside Chamfer Angle in Deg | 45.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 410 |
| Outside Chamfer Depth | 0.062 INCHES NOMINAL IN |
| Inside Chamfer Angle in Deg | 45.0 |
| End Hole Diameter | 1.625 INCHES MINIMUM AND 1.630 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 128HM30011-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 128HM30019-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 128HM30011-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 128HM30019 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| 128HM30019-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 5340-00-914-3432 is a Retainer,helical Compression Spr, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-914-3432 has 1 manufacturer part number on file: 128HM30011-1 (Northrop Grumman Systems Corporation).
Key specifications for 128HM30011-1: Overall Height: 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN; FSC Application Data: CYLINDER,ACTUATING,HYDRAULIC,AIRCRAFT; Body Outside Diameter: 2.360 INCHES NOMINAL IN; Style Designator: PARALLEL. 14 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5340-00-914-3432 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.