The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-386-6741, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-386-6741 |
| Primary Part Number | 025505-1 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| Status | ACTIVE |
| Material Hardness Rating | 51.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM |
| Surface Treatment Document and Classification | MIL-P-16232, TYPE Z, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE |
| Design Type | SOLID |
| Material Document and Classification | MIL-S-5000, COMP E4340 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | PHOSPHATE ZINC |
| Material | STEEL COMP E4340 |
| 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 |
|---|---|
| 025505-1 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 025505-1 | 3/9 Design control — primary reference Meggitt Defense Systems, Inc. Dba Meggitt Western Design |
NSN 5340-01-386-6741 is a Seat,helical Compression Spring, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-386-6741 has 1 manufacturer part number on file: 025505-1 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).
Key specifications for 025505-1: Material Hardness Rating: 51.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Surface Treatment Document and Classification: MIL-P-16232, TYPE Z, CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE; Design Type: SOLID; Material Document and Classification: MIL-S-5000, COMP E4340 MIL SPEC SINGLE MATERIAL RESPONSE. 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.