The Cover,access, cataloged under National Stock Number 5340-01-054-5510, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-054-5510 |
| Primary Part Number | 40-310-0551 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Bolt Circle Hole Quantity | 4 |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Cross-Sectional Shape Style | FLAT |
| Outside Diameter | 4.938 INCHES NOMINAL IN |
| Securing Device Type | THREADED FASTENER |
| Bolt Circle Diameter | 4.125 INCHES NOMINAL IN |
| Peripheral Shape Style | ROUND, MULTI HOLES |
| Material | STEEL |
| Body Thickness | 0.312 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 |
|---|---|
| 40-310-0551 PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 260047 | 5/9 Secondary reference Hercules Engine Co Inc |
| 40-310-0551 | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 5340-01-054-5510 is a Cover,access, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-054-5510 has 1 manufacturer part number on file: 40-310-0551 (Brinkley Technology Group Llc Dba Hercules Manufacturing).
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-231-6157, 1280-01-314-7853, 5330-01-384-9289. Verify interchangeability with system specifications before substitution.
Key specifications for 40-310-0551: Bolt Circle Hole Quantity: 4; Mounting Opening Shape Style: UNTHREADED HOLE; Cross-Sectional Shape Style: FLAT; Outside Diameter: 4.938 INCHES NOMINAL IN. 9 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.