The Clamp,synchro, cataloged under National Stock Number 5340-01-133-8890, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-133-8890 |
| Primary Part Number | 22687 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Smiths Aerospace, Inc., Electronic Systems-Grand Rapids |
| Status | ACTIVE |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE |
| Height | 0.193 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 303 |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.244 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 |
| Part Number | Manufacturer |
|---|---|
| 22687 PRIMARY | Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA) |
| Reference | Meaning |
|---|---|
| 22687B | 5/9 Secondary reference Smiths Aerospace, Inc., Electronic Systems-Grand Rapids |
NSN 5340-01-133-8890 is a Clamp,synchro, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-133-8890 has 1 manufacturer part number on file: 22687 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).
1 possible match (shared part number, not a government interchangeability claim): 2010-01-278-1081. Verify interchangeability with system specifications before substitution.
Key specifications for 22687: Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE; Height: 0.193 INCHES NOMINAL IN; Surface Treatment: PASSIVATE; Material: STEEL COMP 303. 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.