The Clamp,block, cataloged under National Stock Number 5340-01-657-5953, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-657-5953 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Mounting Hole Quantity | 22 |
| Distance From End to First Clamping Hole Center | 0.98 INCHES NOMINAL IN |
| Block Height | 1.41 INCHES NOMINAL1.41 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Mounting Hole Diameter | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Center to Center Distance Between First and Third Mounting Holes | 1.29 INCHES NOMINAL1.29 INCHES NOMINAL IN |
| Cable Diameter for Which Designed | 0.94 INCHES NOMINAL SINGLE HOLE IN |
| Distance From End to First Mounting Hole Center | 0.34 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Material | PLASTIC POLYPROPYLENE |
| 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 |
|---|---|
| H3239PP | 3/2 Design control — primary reference U.S. Government activity |
| 4266533 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 5340-01-657-5953 is a Clamp,block, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-01-657-5953: Mounting Hole Quantity: 22; Distance From End to First Clamping Hole Center: 0.98 INCHES NOMINAL IN; Block Height: 1.41 INCHES NOMINAL1.41 INCHES NOMINAL IN; Style Designator: RECTANGULAR. 10 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.