The Clamp,synchro, cataloged under National Stock Number 5340-01-078-2606, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-078-2606 |
| Primary Part Number | 639AS1620 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE |
| Material Document and Classification | QQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | OXIDE |
| Width | 0.390 INCHES NOMINAL IN |
| Material | STEEL COMP 301 |
| Hole Diameter | 5.072 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 |
|---|---|
| 588.70-100004-000 | Diehl Defence Gmbh & Co. Kg (DEU) |
| 639AS1620 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 588.70-100012-002 | Diehl Defence Gmbh & Co. Kg (DEU) |
| Reference | Meaning |
|---|---|
| 10117591 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5340-01-078-2606 is a Clamp,synchro, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-078-2606 has 3 manufacturer part numbers on file: 588.70-100004-000 (Diehl Defence Gmbh & Co. Kg), 639AS1620 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 588.70-100012-002 (Diehl Defence Gmbh & Co. Kg).
Key specifications for 639AS1620: Surface Treatment Document and Classification: MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE; Material Document and Classification: QQ-S-766,1/2 HARD FED SPEC SINGLE MATERIAL RESPONSE; Surface Treatment: OXIDE; Width: 0.390 INCHES NOMINAL IN. 6 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.