The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-142-9072, 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 5 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 | 5340-01-142-9072 |
| Primary Part Number | 2178982 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Material Hardness Rating | 35.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MINIMUM AND 40.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MAXIMUM |
| Design Type | SOLID |
| Material Document and Classification | AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE |
| Surface Treatment | CHROMIUM |
| 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 |
|---|---|
| 2178982 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 5340-01-142-9072 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 5340-01-142-9072 has 1 manufacturer part number on file: 2178982 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 2178982: Material Hardness Rating: 35.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MINIMUM AND 40.0 INTERNATIONAL RUBBER HARDNESS DEGREE SCALE MAXIMUM; Design Type: SOLID; Material Document and Classification: AMS 5613 ASSN STD SINGLE MATERIAL RESPONSE; Special Features: NOT CASEHARDENED. 5 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.