The Clamp,synchro, cataloged under National Stock Number 5340-01-122-2690, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Designatronics Inc Perfect Gear and Instrument Div. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-122-2690 |
| Primary Part Number | YC2-1S |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Designatronics Inc Perfect Gear and Instrument Div |
| Status | ACTIVE |
| Length | 0.313 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | PASSIVATE |
| Width | 0.281 INCHES NOMINAL IN |
| Material | STEEL COMP 302 |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.120 INCHES MINIMUM AND 0.125 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 |
|---|---|
| YC2-1S PRIMARY | Designatronics Inc Perfect Gear and Instrument Div (USA) |
| Reference | Meaning |
|---|---|
| 711698-140 | 7/2 Vendor item drawing reference Raytheon Company Div Rmd Strategic |
| 3013925-1 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5340-01-122-2690 is a Clamp,synchro, manufactured by Designatronics Inc Perfect Gear and Instrument Div, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-122-2690 has 1 manufacturer part number on file: YC2-1S (Designatronics Inc Perfect Gear and Instrument Div).
Key specifications for YC2-1S: Length: 0.313 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE; Material Document and Classification: MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE; Surface Treatment: PASSIVATE. 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.