The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-570-8537, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 7 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 | 5340-00-570-8537 |
| Primary Part Number | 178831 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Flange Diameter | 0.718 INCHES NOMINAL IN |
| Material Hardness Rating | 90.2 ROCKWELL N MINIMUM AND 91.8 ROCKWELL N MAXIMUM |
| Body Outside Diameter | 0.359 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-633, COMP FS1117 FED SPEC SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 0.218 INCHES NOMINAL IN |
| Casehardening Indicator | CASEHARDENED |
| Material | STEEL COMP 1117 |
| 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 |
|---|---|
| 178831 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 5340-00-570-8537 is a Retainer,helical Compression Spr, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-570-8537 has 1 manufacturer part number on file: 178831 (Eaton Aerospace, Llc Dba Jackson South).
Key specifications for 178831: Flange Diameter: 0.718 INCHES NOMINAL IN; Overall Height: 0.953 INCHES NOMINAL IN; Material Hardness Rating: 90.2 ROCKWELL N MINIMUM AND 91.8 ROCKWELL N MAXIMUM; Body Outside Diameter: 0.359 INCHES NOMINAL IN. 7 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.