The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-678-4727, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-678-4727 |
| Primary Part Number | 8682456 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Flange Diameter | 1.120 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 1 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325, TYPE 2, CLASS 3 FED SPEC 2ND TREATMENT RESPONSE |
| Flange Thickness | 0.200 INCHES NOMINAL IN |
| Body Outside Diameter | 0.780 INCHES NOMINAL IN |
| Style Designator | PARALLEL |
| Mounting Hole Diameter | 0.073 INCHES NOMINAL IN |
| Body Inside Diameter | 0.690 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Lip Thickness | 0.160 INCHES NOMINAL IN |
| Bolt Circle Diameter | 1.040 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC AND CHROMATE |
| Material | STEEL |
| End Hole Diameter | 0.520 INCHES NOMINAL 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 |
| Part Number | Manufacturer |
|---|---|
| 8682456 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2910006784727 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 5340-00-678-4727 is a Retainer,helical Compression Spr, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-678-4727 has 1 manufacturer part number on file: 8682456 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 8682456: Flange Diameter: 1.120 INCHES NOMINAL IN; Overall Height: 0.760 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 1 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325, TYPE 2, CLASS 3 FED SPEC 2ND TREATMENT RESPONSE; Flange Thickness: 0.200 INCHES NOMINAL IN. 13 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.