The Cover,access, cataloged under National Stock Number 5340-01-278-6631, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-278-6631 |
| Primary Part Number | 897990-1 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Inside Width | 1.380 INCHES MINIMUM AND 1.395 INCHES MAXIMUM IN |
| Length | 2.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-E-15090 MIL SPEC SINGLE TREATMENT RESPONSE |
| Distance Between Holes Along Length | 1.437 INCHES NOMINAL IN |
| Flange Thickness | 0.032 INCHES NOMINAL IN |
| Inside Corner Radius | 0.016 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN |
| First Recess Inside Height | 0.780 INCHES NOMINAL IN |
| Hole Quantity Along Length | 2 |
| Distance Between Holes Along Width | 0.656 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-250/8 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | SQUARE OR RECTANGULAR RECESS |
| Hole Quantity Along Width | 2 |
| Distance From First Hole Centerline to End Along Length | 0.281 INCHES NOMINAL IN |
| Bolt Circle Diameter | 0.141 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE |
| Width | 1.316 INCHES MINIMUM AND 1.331 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 5052 |
| Body Thickness | 0.032 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 |
| Part Number | Manufacturer |
|---|---|
| 897990-1 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 897990-1 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5340-01-278-6631 is a Cover,access, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-278-6631 has 1 manufacturer part number on file: 897990-1 (Raytheon Company Dba Raytheon Co).
Key specifications for 897990-1: Inside Width: 1.380 INCHES MINIMUM AND 1.395 INCHES MAXIMUM IN; Length: 2.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-E-15090 MIL SPEC SINGLE TREATMENT RESPONSE; Distance Between Holes Along Length: 1.437 INCHES NOMINAL IN. 18 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.