The Clamp,synchro, cataloged under National Stock Number 5340-01-133-8217, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Legacy Am&m. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-133-8217 |
| Primary Part Number | 191-31728 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Length | 2.250 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6758,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE |
| Height | 0.750 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE |
| Width | 0.531 INCHES NOMINAL IN |
| Material | STEEL COMP 4130 |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.311 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 191-31728 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 5340-01-133-8217 is a Clamp,synchro, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-133-8217 has 1 manufacturer part number on file: 191-31728 (The Boeing Company Div Legacy Am&m).
Key specifications for 191-31728: Length: 2.250 INCHES NOMINAL IN; Material Document and Classification: MIL-S-6758,COND F4 MIL SPEC SINGLE MATERIAL RESPONSE; Height: 0.750 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.
NSN 5340-01-133-8217 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.