The Cover,access, cataloged under National Stock Number 5340-00-734-6820, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. Government technical data includes 22 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-734-6820 |
| Primary Part Number | 3866K557 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Distance From First Hole Centerline to End Along Width | 2.940 INCHES NOMINAL IN |
| Inside Width | 4.375 INCHES NOMINAL IN |
| Corner Radius | 1.125 INCHES NOMINAL IN |
| Length | 11.500 INCHES NOMINAL IN |
| Inside Length | 10.000 INCHES NOMINAL IN |
| Distance Between Holes Along Length | 3.500 INCHES NOMINAL IN |
| Flange Thickness | 0.179 INCHES NOMINAL IN |
| Inside Corner Radius | 0.190 INCHES NOMINAL IN |
| First Recess Inside Height | 0.446 INCHES NOMINAL IN |
| Hole Quantity Along Length | 4 |
| Distance Between Hole Centerline and First Hole Along Length | 3.625 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Cross-Sectional Shape Style | SQUARE OR RECTANGULAR RECESS |
| Securing Device Type | THREADED FASTENER |
| Hole Quantity Along Width | 6 |
| Corner Hole Centerline Radius | 0.750 INCHES NOMINAL IN |
| Distance From First Hole Centerline to End Along Length | 4.000 INCHES NOMINAL IN |
| Distance Between Hole Centerline and First Hole Along Width | 2.560 INCHES NOMINAL IN |
| Peripheral Shape Style | RECTANGLE, MULTI HOLES |
| Width | 5.785 INCHES NOMINAL IN |
| Hole Diameter | 0.412 INCHES NOMINAL IN |
| Body Thickness | 0.179 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 |
|---|---|
| 3866K557 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| 7346820 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 98666R1 | 5/2 Secondary reference U.S. Government activity |
| 2520007346820 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| 98666R1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| K05284 | 5/9 Secondary reference Diamond Reo Truck Co |
NSN 5340-00-734-6820 is a Cover,access, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-734-6820 has 2 manufacturer part numbers on file: 3866K557 (Meritor Heavy Vehicle Systems, Llc), 7346820 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 3866K557: Distance From First Hole Centerline to End Along Width: 2.940 INCHES NOMINAL IN; Inside Width: 4.375 INCHES NOMINAL IN; Corner Radius: 1.125 INCHES NOMINAL IN; Length: 11.500 INCHES NOMINAL IN. 22 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.