The Clamp,synchro, cataloged under National Stock Number 5340-01-042-7978, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-042-7978 |
| Primary Part Number | 10905452 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Length | 1.500 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| Material Document and Classification | QQ-W-412,COMP 2,TYPE 2,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Height | 0.620 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE |
| Width | 0.500 INCHES NOMINAL IN |
| Material | STEEL |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.128 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 |
|---|---|
| 10905452 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| DL10905452 REV B | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 10905452 REV D | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 1015010427978 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5340-01-042-7978 is a Clamp,synchro, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-042-7978 has 3 manufacturer part numbers on file: 10905452 (U S Army Tank Automotive Command Amsta-Im-Mm), DL10905452 REV B (U S Army Tank Automotive Command Amsta-Im-Mm), 10905452 REV D (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10905452: Length: 1.500 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE; Material Document and Classification: QQ-W-412,COMP 2,TYPE 2,COND A FED SPEC SINGLE MATERIAL RESPONSE; Height: 0.620 INCHES NOMINAL IN. 9 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.