The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-355-4412, 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. 3 items share 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 | 5340-00-355-4412 |
| Primary Part Number | 103774 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| First Step Diameter | 1.1090 INCHES NOMINAL IN |
| End Diameter | 0.5680 INCHES MINIMUM AND 0.5690 INCHES MAXIMUM IN |
| Distance From End to First Step | 0.4060 INCHES NOMINAL IN |
| Design Type | SOLID |
| Material Document and Classification | ASTM A108, GRADE 1010 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A575, GRADE 1010 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A576, GRADE 1010 ASSN STD SINGLE MATERIAL RESPONSE |
| Bore Diameter | 0.6880 INCHES NOMINAL IN |
| Material | STEEL COMP 1010 |
| 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 |
|---|---|
| 103774 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
NSN 5340-00-355-4412 is a Seat,helical Compression Spring, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-355-4412 has 1 manufacturer part number on file: 103774 (Eaton Aerospace, Llc Dba Jackson South).
3 possible matches (shared part number, not a government interchangeability claim): 4730-00-987-7177, 5930-01-048-1564, 5305-01-560-4475. Verify interchangeability with system specifications before substitution.
Key specifications for 103774: Overall Height: 0.4652 INCHES NOMINAL IN; First Step Diameter: 1.1090 INCHES NOMINAL IN; End Diameter: 0.5680 INCHES MINIMUM AND 0.5690 INCHES MAXIMUM IN; Distance From End to First Step: 0.4060 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.