The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-641-8979, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-641-8979 |
| Primary Part Number | 167-8204845 PC 25 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | PARALLEL |
| 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 |
|---|---|
| 167-8200542 ASSY 97 | Naval Sea Systems Command (USA) |
| 167-8204845 PC 25 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 167-8204845 | D/9 Drawing number reference only Naval Sea Systems Command |
| 167-8200542 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5340-01-641-8979 is a Retainer,helical Compression Spr, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-641-8979 has 2 manufacturer part numbers on file: 167-8200542 ASSY 97 (Naval Sea Systems Command), 167-8204845 PC 25 (Naval Sea Systems Command).
6 possible matches (shared part number, not a government interchangeability claim): 5340-01-642-0791, 2040-01-642-2625, 5305-01-656-8836. Verify interchangeability with system specifications before substitution.
Key specifications for 167-8204845 PC 25: Style Designator: PARALLEL; Part Name Assigned by Controlling Agency: ASSEMBLY, SPRING CAN VERTICAL MOUNT; End Item Identification: HATCH, BALLISTIC. 1 specification is 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.