The Clamp,synchro, cataloged under National Stock Number 5340-01-057-3531, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 9 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 | 5340-01-057-3531 |
| Primary Part Number | 627221373-001 |
| Item Name | Clamp,synchro |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| Length | 0.680 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/11,TEMPER 6 FED SPEC SINGLE MATERIAL RESPONSE |
| Height | 0.190 INCHES NOMINAL IN |
| Color | BLACK |
| Surface Treatment | ANODIZE |
| Width | 0.500 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| Furnished Items | LOCKNUT |
| Hole Diameter | 0.148 INCHES MINIMUM AND 0.154 INCHES MAXIMUM 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 |
|---|---|
| 627221373-001 PRIMARY | Lockheed Martin Corporation (USA) |
NSN 5340-01-057-3531 is a Clamp,synchro, manufactured by Lockheed Martin Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-057-3531 has 1 manufacturer part number on file: 627221373-001 (Lockheed Martin Corporation).
Key specifications for 627221373-001: Length: 0.680 INCHES NOMINAL IN; Material Document and Classification: QQ-A-250/11,TEMPER 6 FED SPEC SINGLE MATERIAL RESPONSE; Height: 0.190 INCHES NOMINAL IN; Color: BLACK. 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.