The Clamp,block, cataloged under National Stock Number 5340-01-325-2855, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-325-2855 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Clamping Hole Quantity | 4 |
| Center to Center Distance Between First and Fourth Clamping Holes | 1.830 INCHES NOMINAL IN |
| Distance From End to First Clamping Hole Center | 0.770 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541,CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A |
| Block Height | 0.380 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Mounting Hole Diameter | 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Clamping Hole Diameter | 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST HOLE IN |
| Clamping Hole Diameter | 0.375 INCHES MINIMUM AND 0.385 INCHES MAXIMUM SECOND HOLE IN |
| Clamping Hole Diameter | 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FOURTH HOLE IN |
| Clamping Hole Diameter | 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM THIRD HOLE IN |
| Center to Center Distance Between First and Third Clamping Holes | 1.270 INCHES NOMINAL IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.250 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.260 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S) |
| Center to Center Distance Between First and Second Mounting Holes | 2.780 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE |
| Center to Center Distance Between First and Second Clamping Holes | 0.670 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 |
| Reference | Meaning |
|---|---|
| 8637343-10 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5340-01-325-2855 is a Clamp,block, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-325-2855: Mounting Hole Quantity: 2; Overall Height: 0.760 INCHES NOMINAL IN; Clamping Hole Quantity: 4; Center to Center Distance Between First and Fourth Clamping Holes: 1.830 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.