The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-327-6017, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-327-6017 |
| Primary Part Number | 4009527 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| First Step Diameter | 0.4450 INCHES MINIMUM AND 0.4550 INCHES MAXIMUM IN |
| End Diameter | 0.1540 INCHES MINIMUM AND 0.1580 INCHES MAXIMUM IN |
| Second End Diameter | 0.3200 INCHES MINIMUM AND 0.3300 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.1650 INCHES MINIMUM AND 0.1850 INCHES MAXIMUM IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE |
| Counterbore Length | 0.2750 INCHES MINIMUM AND 0.3150 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.1830 INCHES MINIMUM AND 0.1930 INCHES MAXIMUM IN |
| First Step Length | 0.1450 INCHES MINIMUM AND 0.1550 INCHES MAXIMUM IN |
| Bore Diameter | 0.0900 INCHES MINIMUM AND 0.1000 INCHES MAXIMUM 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 |
|---|---|
| 4009527 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 4009527 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 5340PL0845427 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 4009527 | 3/9 Design control — primary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5340-00-327-6017 is a Seat,helical Compression Spring, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-327-6017 has 2 manufacturer part numbers on file: 4009527 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 4009527 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 4009527: Overall Height: 0.5450 INCHES NOMINAL IN; First Step Diameter: 0.4450 INCHES MINIMUM AND 0.4550 INCHES MAXIMUM IN; End Diameter: 0.1540 INCHES MINIMUM AND 0.1580 INCHES MAXIMUM IN; Second End Diameter: 0.3200 INCHES MINIMUM AND 0.3300 INCHES MAXIMUM IN. 12 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.