The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-01-029-4547, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-029-4547 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Material Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE |
| Body Outside Diameter | 3.000 INCHES NOMINAL IN |
| Style Designator | IRREGULAR |
| Material Document and Classification | MIL-S-6758, COMP 4130 MIL SPEC SINGLE MATERIAL RESPONSE |
| Body Inside Diameter | 2.795 INCHES MINIMUM AND 2.805 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Lip Thickness | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE |
| Material | STEEL COMP 4130 |
| End Hole Diameter | 1.375 INCHES MINIMUM AND 1.376 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 |
|---|---|
| 4414D661 | 3/2 Design control — primary reference U.S. Government activity |
| 4414D661 | 5/9 Secondary reference Goodrich Corporation Dba Trw Lucas Aerospace |
NSN 5340-01-029-4547 is a Retainer,helical Compression Spr, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-029-4547: Overall Height: 4.220 INCHES NOMINAL IN; Material Hardness Rating: 28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE; Body Outside Diameter: 3.000 INCHES NOMINAL IN. 11 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.