The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-318-2170, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-318-2170 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Surface Treatment Document and Classification | DOD-P-16232,TY M,CL 1 DEF STAN/SPEC SINGLE TREATMENT RESPONSE |
| Flange Thickness | 0.250 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A108, GRADE 1020 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.281 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Bolt Circle Diameter | 1.625 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE MANGANESE |
| Material | STEEL COMP 1020 |
| 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 |
|---|---|
| 2123051 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5340-01-318-2170 is a Retainer,helical Compression Spr, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-318-2170: Overall Height: 2.250 INCHES NOMINAL IN; Surface Treatment Document and Classification: DOD-P-16232,TY M,CL 1 DEF STAN/SPEC SINGLE TREATMENT RESPONSE; Flange Thickness: 0.250 INCHES NOMINAL IN; Material Document and Classification: ASTM A108, GRADE 1020 ASSN STD SINGLE MATERIAL RESPONSE. 8 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.