The Clamp,block,section, cataloged under National Stock Number 5340-01-297-1809, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 13 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 | 5340-01-297-1809 |
| Primary Part Number | 5266346 |
| Item Name | Clamp,block,section |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 22 |
| Clamping Hole Quantity | 11 |
| Distance From End to First Clamping Hole Center | 2.380 INCHES NOMINAL IN |
| Block Height | 1.250 INCHES NOMINAL1.250 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Material Document and Classification | MIL-P-18177,TY GEE MIL SPEC SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.281 INCHES NOMINAL0.281 INCHES NOMINAL IN |
| Clamping Hole Diameter | 3.790 INCHES NOMINAL FIRST HOLE IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.312 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Center to Center Distance Between First and Second Mounting Holes | 4.125 INCHES NOMINAL4.125 INCHES NOMINAL IN |
| Material | PLASTIC EPOXY |
| 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 5340-01-297-1809 is a Clamp,block,section, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-297-1809 has 3 manufacturer part numbers on file: 5266346 (Naval Sea Systems Command), 5266346 (Yama Manufacturing Incorporated), 5266346 (Raytheon Company Dba Raytheon Co).
Key specifications for 5266346: Mounting Hole Quantity: 22; Clamping Hole Quantity: 11; Distance From End to First Clamping Hole Center: 2.380 INCHES NOMINAL IN; Block Height: 1.250 INCHES NOMINAL1.250 INCHES NOMINAL IN. 13 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.