The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-211-6290, 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 8 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 | 5340-01-211-6290 |
| Primary Part Number | 751682-1-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| First Step Diameter | 1.8470 INCHES MINIMUM AND 1.8488 INCHES MAXIMUM IN |
| Material Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Design Type | SOLID |
| Material Document and Classification | AMS 5612 ASSN STD SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.2120 INCHES NOMINAL IN |
| Counterbore Diameter | 1.6860 INCHES MINIMUM AND 1.6910 INCHES MAXIMUM IN |
| Bore Diameter | 1.2800 INCHES NOMINAL IN |
| Material | STEEL COMP 410 |
| 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 |
|---|---|
| 751682-1-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5340-01-211-6290 is a Seat,helical Compression Spring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-211-6290 has 1 manufacturer part number on file: 751682-1-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 751682-1-1: Overall Height: 0.2980 INCHES MINIMUM AND 0.3020 INCHES MAXIMUM IN; First Step Diameter: 1.8470 INCHES MINIMUM AND 1.8488 INCHES MAXIMUM IN; Material Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Design Type: SOLID. 8 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.