The Clamp,synchro, cataloged under National Stock Number 5340-01-028-4912, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Honeywell Intl Inc Defense Avionics Systems Former Test Systems 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-028-4912 |
| Primary Part Number | 2798489-1 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div |
| Status | ACTIVE |
| Length | 0.680 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/11,TEMPER 4 FED SPEC SINGLE MATERIAL RESPONSE |
| Height | 0.190 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE |
| Width | 0.285 INCHES MINIMUM AND 0.315 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 6061 |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.171 INCHES MINIMUM AND 0.177 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 |
|---|---|
| 2798489-1 PRIMARY | Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA) |
| Reference | Meaning |
|---|---|
| 2798489-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
NSN 5340-01-028-4912 is a Clamp,synchro, manufactured by Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-028-4912 has 1 manufacturer part number on file: 2798489-1 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div).
Key specifications for 2798489-1: Length: 0.680 INCHES NOMINAL IN; Material Document and Classification: QQ-A-250/11,TEMPER 4 FED SPEC SINGLE MATERIAL RESPONSE; Height: 0.190 INCHES NOMINAL IN; Surface Treatment: CHROMATE. 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.