The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-200-1567, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Link-Belt Cranes, L.p., Lllp. 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 | 5340-01-200-1567 |
| Primary Part Number | JC1491 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Link-Belt Cranes, L.p., Lllp |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| First Step Diameter | 1.0620 INCHES NOMINAL IN |
| End Diameter | 0.4060 INCHES MINIMUM AND 0.4110 INCHES MAXIMUM IN |
| Countersink Diameter | 0.3760 INCHES NOMINAL IN |
| Distance From End to First Step | 0.3850 INCHES NOMINAL IN |
| Design Type | SOLID |
| Style Designator | SEAT |
| Material Document and Classification | LB921003, COMP 1018, FSCM 36422 MFR REF SINGLE MATERIAL RESPONSE |
| Chamfer Angle in Deg | 20.0 |
| Bore Diameter | 0.3140 INCHES MINIMUM AND 0.3190 INCHES MAXIMUM IN |
| Material | STEEL COMP 1018 |
| 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 |
|---|---|
| JC1491 PRIMARY | Link-Belt Cranes, L.p., Lllp (USA) |
NSN 5340-01-200-1567 is a Seat,helical Compression Spring, manufactured by Link-Belt Cranes, L.p., Lllp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-200-1567 has 1 manufacturer part number on file: JC1491 (Link-Belt Cranes, L.p., Lllp).
Key specifications for JC1491: Overall Height: 0.5000 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN; Countersink Angle in Deg: 45.0; First Step Diameter: 1.0620 INCHES NOMINAL IN; End Diameter: 0.4060 INCHES MINIMUM AND 0.4110 INCHES MAXIMUM 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.