The Clamp,block,section, cataloged under National Stock Number 5340-01-355-2788, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 16 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 | 5340-01-355-2788 |
| Primary Part Number | 12941478 |
| Item Name | Clamp,block,section |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Mounting Hole Quantity | 22 |
| Clamping Hole Quantity | 44 |
| Center to Center Distance Between First and Fourth Clamping Holes | 3.235 INCHES MINIMUM AND 3.265 INCHES MAXIMUM IN |
| Distance From End to First Clamping Hole Center | 0.499 INCHES NOMINAL IN |
| Block Height | 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Material Document and Classification | QQ-A-200/8 T6 OR T6511 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/11 T651 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-200/9 T5 FED SPEC 2ND MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.342 INCHES MINIMUM AND 0.342 INCHES MINIMUM AND 0.372 INCHES MAXIMUM0.372 INCHES MAXIMUM IN |
| Clamping Hole Diameter | 0.560 INCHES NOMINAL ALL HOLES IN |
| Center to Center Distance Between First and Third Clamping Holes | 2.307 INCHES MINIMUM AND 2.327 INCHES MAXIMUM IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.312 INCHES NOMINAL0.312 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.969 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Center to Center Distance Between First and Second Mounting Holes | 1.375 INCHES NOMINAL1.375 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6063 |
| Center to Center Distance Between First and Second Clamping Holes | 1.360 INCHES MINIMUM AND 1.390 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 |
|---|---|
| 12941478 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 5340-01-355-2788 is a Clamp,block,section, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-355-2788 has 1 manufacturer part number on file: 12941478 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 12941478: Mounting Hole Quantity: 22; Clamping Hole Quantity: 44; Center to Center Distance Between First and Fourth Clamping Holes: 3.235 INCHES MINIMUM AND 3.265 INCHES MAXIMUM IN; Distance From End to First Clamping Hole Center: 0.499 INCHES NOMINAL IN. 16 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.