The Cover,access, cataloged under National Stock Number 5340-01-181-7520, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-181-7520 |
| Primary Part Number | 413006 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer |
| Status | ACTIVE |
| Flange Thickness | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Bolt Circle Hole Quantity | 4 |
| First Recess Diameter | 2.375 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Material Document and Classification | QQ-C-390,ALLOY E10 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 3.500 INCHES NOMINAL IN |
| Inside Diameter | 1.688 INCHES NOMINAL IN |
| Bolt Circle Diameter | 2.938 INCHES NOMINAL IN |
| Peripheral Shape Style | ROUND, MULTI HOLES |
| Material | COPPER ALLOY |
| Hole Diameter | 0.375 INCHES NOMINAL IN |
| 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 |
|---|---|
| 413006 PRIMARY | Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer (USA) |
NSN 5340-01-181-7520 is a Cover,access, manufactured by Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-181-7520 has 1 manufacturer part number on file: 413006 (Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer).
Key specifications for 413006: Flange Thickness: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN; Bolt Circle Hole Quantity: 4; First Recess Diameter: 2.375 INCHES NOMINAL IN; Mounting Opening Shape Style: UNTHREADED HOLE. 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.