The Clamp,synchro, cataloged under National Stock Number 5340-00-856-0700, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-856-0700 |
| Primary Part Number | 6863333 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Length | 0.472 INCHES NOMINAL IN |
| Material Document and Classification | S.3,BRITISH STANDARDS INST MFR REF SINGLE MATERIAL RESPONSE |
| Height | 0.147 INCHES NOMINAL IN |
| Width | 0.700 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.275 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 |
NSN 5340-00-856-0700 is a Clamp,synchro, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-856-0700 has 3 manufacturer part numbers on file: EV20652 (Rolls-Royce Airlines), 6863333 (Allison Transmission Inc Dba Allison Transmission, Inc), 86333 (Rolls-Royce Airlines).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-278-9983. Verify interchangeability with system specifications before substitution.
Key specifications for 6863333: Length: 0.472 INCHES NOMINAL IN; Material Document and Classification: S.3,BRITISH STANDARDS INST MFR REF SINGLE MATERIAL RESPONSE; Height: 0.147 INCHES NOMINAL IN; Width: 0.700 INCHES NOMINAL IN. 7 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.