The Clamp,block,section, cataloged under National Stock Number 5340-01-354-9678, 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 19 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-354-9678 |
| Primary Part Number | 12948171 |
| 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 | 33 |
| Clamping Hole Quantity | 66 |
| Center to Center Distance Between First and Fourth Clamping Holes | 3.370 INCHES NOMINAL IN |
| Distance From End to First Clamping Hole Center | 2.505 INCHES NOMINAL IN |
| Block Height | 0.720 INCHES MINIMUM AND 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM0.780 INCHES MAXIMUM IN |
| Style Designator | RECTANGULAR |
| Mounting Hole Diameter | 0.350 INCHES MINIMUM AND 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM0.410 INCHES MAXIMUM IN |
| Center to Center Distance Between First and Third Mounting Holes | 7.804 INCHES NOMINAL7.804 INCHES NOMINAL IN |
| Clamping Hole Diameter | 0.190 INCHES MINIMUM AND 0.250 INCHES MAXIMUM FIRST HOLE IN |
| Clamping Hole Diameter | 0.250 INCHES MINIMUM AND 0.310 INCHES MAXIMUM ALL HOLES IN |
| Clamping Hole Diameter | 0.380 INCHES MINIMUM AND 0.440 INCHES MAXIMUM SECOND HOLE IN |
| Center to Center Distance Between First and Sixth Clamping Holes | 6.680 INCHES NOMINAL IN |
| Center to Center Distance Between First and Third Clamping Holes | 2.620 INCHES NOMINAL IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.500 INCHES NOMINAL0.500 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.625 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Center to Center Distance Between First and Fifth Clamping Holes | 4.120 INCHES NOMINAL IN |
| Center to Center Distance Between First and Second Mounting Holes | 2.431 INCHES NOMINAL2.431 INCHES NOMINAL IN |
| Center to Center Distance Between First and Second Clamping Holes | 0.750 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 |
NSN 5340-01-354-9678 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 5340-01-354-9678 has 3 manufacturer part numbers on file: 12948171 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate), 12948171 (Bae Systems Land & Armaments L.p.), 12948171 (Amz Alabama Inc.).
Key specifications for 12948171: Mounting Hole Quantity: 33; Clamping Hole Quantity: 66; Center to Center Distance Between First and Fourth Clamping Holes: 3.370 INCHES NOMINAL IN; Distance From End to First Clamping Hole Center: 2.505 INCHES NOMINAL IN. 19 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.