The Thermal Block, cataloged under National Stock Number 5340-01-676-7642, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Marvin Land Systems, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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: AY.
| Item Name | Thermal Block |
| FSC / FSG | 5340 — Hardware, Commercial (FSG 53) |
| Manufacturers | Marvin Land Systems, Inc. (CAGE 064H2) |
| Parameter | Value |
|---|---|
| NSN | 5340-01-676-7642 |
| Primary Part Number | 406-0041 |
| Item Name | Thermal Block |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Marvin Land Systems, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Unit of Issue | AY |
| Part Number | Manufacturer |
|---|---|
| 406-0041 PRIMARY | Marvin Land Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 406-9900P FN 21 | D/9 Drawing number reference only Marvin Land Systems, Inc. |
NSN 5340-01-676-7642 is a Thermal Block, manufactured by Marvin Land Systems, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-676-7642 has 1 manufacturer part number on file: 406-0041 (Marvin Land Systems, Inc.).
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.