The Clamp,block, cataloged under National Stock Number 5340-01-400-5816, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-400-5816 |
| Primary Part Number | 7-311B25009-1 |
| Item Name | Clamp,block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Mounting Hole Quantity | 22 |
| Clamping Hole Quantity | 55 |
| Distance From End to First Clamping Hole Center | 0.250 INCHES NOMINAL IN |
| Block Height | 0.620 INCHES NOMINAL0.620 INCHES NOMINAL IN |
| Style Designator | RECTANGULAR |
| Mounting Hole Diameter | 0.200 INCHES NOMINAL0.200 INCHES NOMINAL IN |
| Clamping Hole Diameter | 0.231 INCHES MINIMUM AND 0.251 INCHES MAXIMUM ALL HOLES IN |
| Distance From Center of Mounting Hole to Edge Along the Width | 0.300 INCHES NOMINAL0.300 INCHES NOMINAL IN |
| Distance From End to First Mounting Hole Center | 0.620 INCHES NOMINAL IN |
| Mounting Facility | UNTHREADED HOLE(S)UNTHREADED HOLE(S) |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| 7-311B25009-1 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| TA30500614 | 5/2 Secondary reference U.S. Government activity |
NSN 5340-01-400-5816 is a Clamp,block, manufactured by The Boeing Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-400-5816 has 1 manufacturer part number on file: 7-311B25009-1 (The Boeing Company).
Key specifications for 7-311B25009-1: Mounting Hole Quantity: 22; Overall Height: 1.250 INCHES NOMINAL1.250 INCHES NOMINAL IN; Clamping Hole Quantity: 55; Distance From End to First Clamping Hole Center: 0.250 INCHES NOMINAL IN. 11 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.