The Clamp,synchro, cataloged under National Stock Number 5340-01-204-2705, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-204-2705 |
| Primary Part Number | 12312409 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Length | 3.250 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A576 OR A108,1030 TO 104 ASSN STD SINGLE MATERIAL RESPONSE |
| Nominal Thread Size | 0.500 INCHES IN |
| Height | 1.000 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE |
| Width | 1.250 INCHES NOMINAL IN |
| Thread Class | 2B |
| Material | STEEL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.500 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 |
|---|---|
| 12312409 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5340-01-204-2705 is a Clamp,synchro, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-204-2705 has 1 manufacturer part number on file: 12312409 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12312409: Length: 3.250 INCHES NOMINAL IN; Material Document and Classification: ASTM A576 OR A108,1030 TO 104 ASSN STD SINGLE MATERIAL RESPONSE; Nominal Thread Size: 0.500 INCHES IN; Height: 1.000 INCHES NOMINAL 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.