The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-110-8180, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 6 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.
| Parameter | Value |
|---|---|
| NSN | 5340-01-110-8180 |
| Primary Part Number | 4N435 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| First Step Diameter | 1.0140 INCHES NOMINAL IN |
| Material Hardness Rating | 35.0 ROCKWELL C MINIMUM |
| End Diameter | 0.5000 INCHES NOMINAL IN |
| Design Type | SOLID |
| Second Step Diameter | 1.2240 INCHES NOMINAL IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4N435 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5340-01-110-8180 is a Seat,helical Compression Spring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-110-8180 has 1 manufacturer part number on file: 4N435 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4N435: Overall Height: 0.8400 INCHES NOMINAL IN; First Step Diameter: 1.0140 INCHES NOMINAL IN; Material Hardness Rating: 35.0 ROCKWELL C MINIMUM; End Diameter: 0.5000 INCHES NOMINAL IN. 6 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.