The Clamp,block, cataloged under National Stock Number 5340-01-691-8403, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-691-8403 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Surface Treatment | ZINC AND ANODIZE |
| Material | STEEL CORROSION RESISTING AND ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 290480-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-691-8403 is a Clamp,block, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-691-8403: Overall Height: 6.5 INCHES NOMINAL IN; Overall Length: 6.5 INCHES NOMINAL IN; Overall Width: 4.0 INCHES NOMINAL IN; Special Features: BLACK IN COLOR, ADJUSTABLE FOR BARREL DIAMETERS FROM 23.0 MM TO 32.0 MM, INTEGRATED MIL-STD-1913 (PICATINNY) RAIL, SAT SMALL ARMS TRANSMITTER MM. 2 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.