The Clamp,block, cataloged under National Stock Number 5340-01-398-3740, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Mission Systems, Inc.. Government technical data includes 12 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 | 5340-01-398-3740 |
| Primary Part Number | 82-2734090-1 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | General Dynamics Mission Systems, Inc. |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Distance From End to First Clamping Hole Center | 1.620 INCHES NOMINAL IN |
| Block Height | 1.000 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-596, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.312 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Center to Center Distance Between First and Third Mounting Holes | 11.620 INCHES NOMINAL IN |
| Center to Center Distance Between First and Third Clamping Holes | 10.370 INCHES NOMINAL IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.500 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.370 INCHES NOMINAL IN |
| Mounting Facility | SLOT |
| Material | ALUMINUM ALLOY 356.0 |
| Center to Center Distance Between First and Second Clamping Holes | 5.620 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 |
|---|---|
| 82-2734090-1 PRIMARY | General Dynamics Mission Systems, Inc. (USA) |
NSN 5340-01-398-3740 is a Clamp,block, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-398-3740 has 1 manufacturer part number on file: 82-2734090-1 (General Dynamics Mission Systems, Inc.).
Key specifications for 82-2734090-1: Mounting Hole Quantity: 2; Overall Height: 1.000 INCHES NOMINAL IN; Distance From End to First Clamping Hole Center: 1.620 INCHES NOMINAL IN; Block Height: 1.000 INCHES NOMINAL IN. 12 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.