The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-890-5191, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 10 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-890-5191 |
| Primary Part Number | 718980-2 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Countersink Angle in Deg | 35.0 |
| First Step Diameter | 0.4945 INCHES MINIMUM AND 0.4975 INCHES MAXIMUM IN |
| Material Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Countersink Diameter | 0.4100 INCHES NOMINAL IN |
| Design Type | SOLID |
| Counterbore Length | 0.1300 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.3300 INCHES MINIMUM AND 0.3370 INCHES MAXIMUM IN |
| First Step Length | 0.1800 INCHES NOMINAL IN |
| Bore Diameter | 0.2080 INCHES MINIMUM AND 0.2230 INCHES MAXIMUM IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 718980-2 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5340-00-890-5191 is a Seat,helical Compression Spring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-890-5191 has 1 manufacturer part number on file: 718980-2 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 718980-2: Countersink Angle in Deg: 35.0; First Step Diameter: 0.4945 INCHES MINIMUM AND 0.4975 INCHES MAXIMUM IN; Material Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Countersink Diameter: 0.4100 INCHES NOMINAL IN. 10 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.
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.