The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-717-8325, 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 16 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 | 5340-00-717-8325 |
| Primary Part Number | 548538 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| First Step Diameter | 0.4310 INCHES MINIMUM AND 0.4350 INCHES MAXIMUM IN |
| Material Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| End Diameter | 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.0400 INCHES MINIMUM AND 0.0450 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Supplementary Features | DEEP LOOK PROJECT |
| Criticality Code Justification | SUPP |
| Style Designator | SEAT |
| Material Document and Classification | AMS 6415 ASSN STD SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.1400 INCHES NOMINAL IN |
| Counterbore Diameter | 0.1340 INCHES MINIMUM AND 0.1440 INCHES MAXIMUM IN |
| Second Counterbore Length | 0.1330 INCHES NOMINAL IN |
| Second Counterbore Diameter | 0.2070 INCHES MINIMUM AND 0.2130 INCHES MAXIMUM IN |
| First Step Length | 0.2550 INCHES MINIMUM AND 0.2650 INCHES MAXIMUM IN |
| Bore Diameter | 0.0600 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN |
| Material | STEEL COMP 4340 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 548538 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5340-00-717-8325 is a Seat,helical Compression Spring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-717-8325 has 1 manufacturer part number on file: 548538 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 548538: Overall Height: 0.3100 INCHES NOMINAL IN; First Step Diameter: 0.4310 INCHES MINIMUM AND 0.4350 INCHES MAXIMUM IN; Material Hardness Rating: 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM; End Diameter: 0.2450 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN. 16 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.