The Clamp,synchro, cataloged under National Stock Number 5340-01-321-9798, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Defense Logistics Agency Dba Defense Supply Center Philadelphia. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-321-9798 |
| Primary Part Number | PO5340013219798 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| Status | ACTIVE |
| Length | 5.000 INCHES NOMINAL IN |
| Special Test Features | SPECIAL QUALITY CONTROL TESTING |
| Material Document and Classification | ASTM A240 ASSN STD SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 0.500 INCHES IN |
| Height | 2.000 INCHES NOMINAL IN |
| Width | 3.000 INCHES NOMINAL IN |
| Thread Class | 2B |
| Test Data Document | 81349-MIL-P-23199 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Material | STEEL COMP 304 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Hole Diameter | 0.562 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 |
|---|---|
| PO5340013219798 PRIMARY | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| Reference | Meaning |
|---|---|
| LL-HX6-7986 | 5/9 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| 1D46261-1 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5340-01-321-9798 is a Clamp,synchro, manufactured by Defense Logistics Agency Dba Defense Supply Center Philadelphia, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-321-9798 has 1 manufacturer part number on file: PO5340013219798 (Defense Logistics Agency Dba Defense Supply Center Philadelphia).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-584-6822. Verify interchangeability with system specifications before substitution.
Key specifications for PO5340013219798: Length: 5.000 INCHES NOMINAL IN; Special Test Features: SPECIAL QUALITY CONTROL TESTING; Material Document and Classification: ASTM A240 ASSN STD SINGLE MATERIAL RESPONSE; Nominal Thread Size: 0.500 INCHES IN. 11 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.