The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-176-0681, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-176-0681 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Body Outside Diameter | 0.557 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5640, TYPE 30303 ASSN STD 1ST MATERIAL RESPONSE AND AMS 5640, TYPE 30303SE ASSN STD 2ND MATERIAL RESPONSE |
| Inside Chamfer Depth | 0.030 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Body Inside Diameter | 0.450 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN |
| Outside Chamfer Angle in Deg | 47.0 |
| Casehardening Indicator | NOT CASEHARDENED |
| Lip Thickness | 0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 OR STEEL COMP 303SE |
| Inside Chamfer Angle in Deg | 43.0 |
| End Hole Diameter | 0.350 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 5320-4001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-00-176-0681 is a Retainer,helical Compression Spr, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-00-176-0681: Overall Height: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Body Outside Diameter: 0.557 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Material Document and Classification: AMS 5640, TYPE 30303 ASSN STD 1ST MATERIAL RESPONSE AND AMS 5640, TYPE 30303SE ASSN STD 2ND MATERIAL RESPONSE; Inside Chamfer Depth: 0.030 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN. 10 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.