The Cover,access, cataloged under National Stock Number 5340-01-273-9505, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Aerospace & Commercial Technologies, Llc Dba Aerospace & Commercial Technologies Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-273-9505 |
| Primary Part Number | 16B4508-7 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Aerospace & Commercial Technologies, Llc Dba Aerospace & Commercial Technologies Llc |
| Status | ACTIVE |
| Bolt Circle Hole Quantity | 6 |
| Cross-Sectional Shape Style | FLAT |
| Outside Diameter | 5.060 INCHES NOMINAL IN |
| Securing Device Type | THREADED FASTENER |
| Bolt Circle Diameter | 4.330 INCHES NOMINAL IN |
| Peripheral Shape Style | ROUND, MULTI HOLES |
| Material | ALUMINUM ALLOY |
| Body Thickness | 0.071 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 16B4508-7 | Infinity Fabrication, Inc. (USA) |
| 16B4508-7 PRIMARY | Aerospace & Commercial Technologies, Llc Dba Aerospace & Commercial Technologies Llc (USA) |
| Reference | Meaning |
|---|---|
| 16B4508-1 | 5/9 Secondary reference Ducommun Aerostructures New York, Inc. Dba Ducommun Aerostructures New York Inc Div Ducommun Aerostructures |
| 16B4508-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-273-9505 is a Cover,access, manufactured by Aerospace & Commercial Technologies, Llc Dba Aerospace & Commercial Technologies Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-273-9505 has 2 manufacturer part numbers on file: 16B4508-7 (Infinity Fabrication, Inc.), 16B4508-7 (Aerospace & Commercial Technologies, Llc Dba Aerospace & Commercial Technologies Llc).
Key specifications for 16B4508-7: Bolt Circle Hole Quantity: 6; Cross-Sectional Shape Style: FLAT; Outside Diameter: 5.060 INCHES NOMINAL IN; Securing Device Type: THREADED FASTENER. 8 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.
NSN 5340-01-273-9505 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.