The Clamp,synchro, cataloged under National Stock Number 5340-01-369-0834, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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 | 5340-01-369-0834 |
| Primary Part Number | 6661650-1 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Length | 0.720 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541,CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A |
| Style Designator | SQUARE |
| Effective Length | 0.314 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES IN |
| Effective Height | 0.590 INCHES NOMINAL IN |
| Height | 0.720 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE |
| Outside Edge to Bolt Hole Center Distance Along Length | 0.406 INCHES NOMINAL IN |
| Width | 0.500 INCHES NOMINAL IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | ALUMINUM ALLOY 5083 |
| Thread Series Designator | UNF |
| Hole Diameter | 0.190 INCHES NOMINAL IN |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.250 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 |
|---|---|
| 6661650-1 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-369-0834 is a Clamp,synchro, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-369-0834 has 1 manufacturer part number on file: 6661650-1 (Naval Sea Systems Command).
Key specifications for 6661650-1: Length: 0.720 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-5541,CL 1A MIL SPEC SINGLE TREATMENT RESPONSE A; Style Designator: SQUARE; Effective Length: 0.314 INCHES NOMINAL IN. 16 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.