The Clamp,synchro, cataloged under National Stock Number 5340-01-428-5943, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-428-5943 |
| Primary Part Number | 556-6408987 FIND AB-2 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material Document and Classification | QQ-S-768 FED SPEC SINGLE MATERIAL RESPONSE |
| Effective Height | 0.190 INCHES NOMINAL IN |
| Height | 0.252 INCHES NOMINAL IN |
| Width | 0.310 INCHES NOMINAL IN |
| Material | STEEL COMP 316 |
| Outside Edge to Bolt Hole Center Distance Along Width | 0.160 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 |
|---|---|
| 556-6408987 FIND AB-2 PRIMARY | Naval Sea Systems Command (USA) |
| 264378701 FIND AA-2 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-428-5943 is a Clamp,synchro, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-428-5943 has 2 manufacturer part numbers on file: 556-6408987 FIND AB-2 (Naval Sea Systems Command), 264378701 FIND AA-2 (Naval Sea Systems Command).
Key specifications for 556-6408987 FIND AB-2: Material Document and Classification: QQ-S-768 FED SPEC SINGLE MATERIAL RESPONSE; Effective Height: 0.190 INCHES NOMINAL IN; Height: 0.252 INCHES NOMINAL IN; Width: 0.310 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.