The Retainer,helical Compression Spr, cataloged under National Stock Number 5340-00-470-7490, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 8 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-470-7490 |
| Primary Part Number | 10512789 |
| Item Name | Retainer,helical Compression Spr |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| FSC Application Data | MOUNT,TELESCOPE M128E2 |
| Body Outside Diameter | 0.880 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-B-626, COMP 1, 1/2 H MFR REF 1ST MATERIAL RESPONSE AND QQ-B-626, COMP 22, 1/2H FED SPEC 2ND MATERIAL RESPONSE |
| Body Inside Diameter | 0.516 INCHES MINIMUM AND 0.547 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Lip Thickness | 0.043 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 268 OR COPPER ALLOY 360 |
| End Hole Diameter | 0.260 INCHES MINIMUM AND 0.270 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 |
| Part Number | Manufacturer |
|---|---|
| 10512789 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 5340-00-470-7490 is a Retainer,helical Compression Spr, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-470-7490 has 1 manufacturer part number on file: 10512789 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 10512789: Overall Height: 0.590 INCHES MINIMUM AND 0.595 INCHES MAXIMUM IN; FSC Application Data: MOUNT,TELESCOPE M128E2; Body Outside Diameter: 0.880 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN; Material Document and Classification: QQ-B-626, COMP 1, 1/2 H MFR REF 1ST MATERIAL RESPONSE AND QQ-B-626, COMP 22, 1/2H FED SPEC 2ND 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.