The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-045-0530, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-045-0530 |
| Item Name | Seat,helical Compression Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Material Document and Classification | QQ-B-637 ALLOY 464 FED SPEC SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY 464 |
| 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 |
| Reference | Meaning |
|---|---|
| 9071 | 3/9 Design control — primary reference Air Dry Co of America, Llc |
| 6304-13PC26 | 5/2 Secondary reference U.S. Government activity |
| 6304-13PC26 | 5/9 Secondary reference Air Dry Co of America, Llc |
| 9071 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-045-0530 is a Seat,helical Compression Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 6520-01-290-3262, 4330-01-349-4012. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-01-045-0530: Material Document and Classification: QQ-B-637 ALLOY 464 FED SPEC SINGLE MATERIAL RESPONSE; Material: COPPER ALLOY 464. 2 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.