The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-071-2545, 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 11 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 | 5340-01-071-2545 |
| Primary Part Number | 6N8629 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| First Step Diameter | 1.1560 INCHES NOMINAL IN |
| End Diameter | 0.6840 INCHES NOMINAL IN |
| Distance From End to First Step | 1.1400 INCHES NOMINAL IN |
| Design Type | SOLID |
| Counterbore Length | 1.1250 INCHES NOMINAL IN |
| Second Step Diameter | 1.3640 INCHES NOMINAL IN |
| Counterbore Diameter | 0.4230 INCHES NOMINAL IN |
| Second Counterbore Length | 0.5000 INCHES NOMINAL IN |
| First Step Length | 0.1790 INCHES NOMINAL IN |
| Bore Diameter | 0.3120 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 |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 6N8629 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5340-01-071-2545 is a Seat,helical Compression Spring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-071-2545 has 1 manufacturer part number on file: 6N8629 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 6N8629: Overall Height: 1.3750 INCHES NOMINAL IN; First Step Diameter: 1.1560 INCHES NOMINAL IN; End Diameter: 0.6840 INCHES NOMINAL IN; Distance From End to First Step: 1.1400 INCHES NOMINAL IN. 11 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.