The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-717-7747, 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 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-717-7747 |
| Primary Part Number | 547944 |
| 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 | 0.4 |
| First Step Diameter | 1.8000 INCHES NOMINAL IN |
| Material Hardness Rating | 27.0 ROCKWELL B MINIMUM AND 60.0 ROCKWELL B MAXIMUM |
| End Diameter | 0.7200 INCHES NOMINAL IN |
| Countersink Diameter | 0.2550 INCHES NOMINAL IN |
| Distance From End to First Step | 0.1600 INCHES NOMINAL IN |
| Design Type | SPLIT |
| Style Designator | SEAT |
| Counterbore Length | 0.1200 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Counterbore Diameter | 1.2800 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 0.2 |
| Bore Diameter | 0.2500 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 547944 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5340-00-717-7747 is a Seat,helical Compression Spring, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-717-7747 has 1 manufacturer part number on file: 547944 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
1 possible match (shared part number, not a government interchangeability claim): 3020-00-948-1835. Verify interchangeability with system specifications before substitution.
Key specifications for 547944: Overall Height: 0.4800 INCHES NOMINAL IN; Countersink Angle in Deg: 0.4; First Step Diameter: 1.8000 INCHES NOMINAL IN; Material Hardness Rating: 27.0 ROCKWELL B MINIMUM AND 60.0 ROCKWELL B MAXIMUM. 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.
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.