The Cover,access, cataloged under National Stock Number 5340-01-121-0457, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-121-0457 |
| Primary Part Number | 709-4684875 ITEM 6 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Distance From First Hole Centerline to End Along Width | 0.281 INCHES NOMINAL IN |
| Corner Radius | 0.188 INCHES NOMINAL IN |
| Length | 3.250 INCHES NOMINAL IN |
| Distance Between Holes Along Length | 2.031 INCHES NOMINAL IN |
| Distance Between Holes Along Width | 2.031 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Cross-Sectional Shape Style | FLAT |
| Securing Device Type | SPECIAL |
| Body Radius | 1.625 INCHES NOMINAL IN |
| Distance From First Hole Centerline to End Along Length | 0.609 INCHES NOMINAL IN |
| Peripheral Shape Style | OVAL, FOUR HOLES |
| Width | 2.600 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Hole Diameter | 0.281 INCHES NOMINAL IN |
| Body Thickness | 0.125 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 |
|---|---|
| 709-4684875 ITEM 6 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87832-1604 | D/9 Drawing number reference only U.S. Government activity |
| 87832-1604 ITEM 6 | 3/2 Design control — primary reference U.S. Government activity |
| 709-4684875 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5340-01-121-0457 is a Cover,access, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-121-0457 has 1 manufacturer part number on file: 709-4684875 ITEM 6 (Naval Sea Systems Command).
7 possible matches (shared part number, not a government interchangeability claim): 3040-01-130-2234, 5365-01-132-7151, 5340-01-153-1527. Verify interchangeability with system specifications before substitution.
Key specifications for 709-4684875 ITEM 6: Distance From First Hole Centerline to End Along Width: 0.281 INCHES NOMINAL IN; Corner Radius: 0.188 INCHES NOMINAL IN; Length: 3.250 INCHES NOMINAL IN; Distance Between Holes Along Length: 2.031 INCHES NOMINAL IN. 15 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.