The Cover,manhole, cataloged under National Stock Number 2040-01-293-5641, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Eacco, Inc.. Government technical data includes 3 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2040-01-293-5641 |
| Primary Part Number | BM21-6 |
| Item Name | Cover,manhole |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Eacco, Inc. |
| Status | ACTIVE |
| Overall Diameter | 29.250 INCHES NOMINAL IN |
| Shape | ROUND |
| Material | ALUMINUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BM21-6 PRIMARY | Eacco, Inc. (USA) |
NSN 2040-01-293-5641 is a Cover,manhole, manufactured by Eacco, Inc., classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-01-293-5641 has 1 manufacturer part number on file: BM21-6 (Eacco, Inc.).
Key specifications for BM21-6: Overall Height: 4.500 INCHES NOMINAL IN; Overall Diameter: 29.250 INCHES NOMINAL IN; Shape: ROUND; Weight: 26.000 POUNDS NOMINAL LBS. 3 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.