The Cover,access, cataloged under National Stock Number 5340-01-343-5749, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Div Corp. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-343-5749 |
| Primary Part Number | G256937-1 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Raytheon Company Div Corp |
| Status | ACTIVE |
| Distance From First Hole Centerline to End Along Width | 1.375 INCHES NOMINAL IN |
| Inside Width | 2.800 INCHES NOMINAL IN |
| Length | 2.920 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-C-5541,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE |
| Inside Length | 1.750 INCHES NOMINAL IN |
| Flange Thickness | 0.060 INCHES NOMINAL IN |
| Inside Corner Radius | 0.130 INCHES NOMINAL IN |
| First Recess Inside Height | 2.460 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Material Document and Classification | QQ-A-250/8-H32 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | SQUARE OR RECTANGULAR RECESS |
| Features Provided | SPECIAL MARKING |
| Securing Device Type | SPECIAL |
| Distance From First Hole Centerline to End Along Length | 0.370 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE |
| Peripheral Shape Style | RECTANGLE, ONE CENTER HOLE |
| Width | 2.740 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 5052 |
| Hole Diameter | 0.213 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN |
| Body Thickness | 0.060 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 |
|---|---|
| G256937-1 PRIMARY | Raytheon Company Div Corp (USA) |
| Reference | Meaning |
|---|---|
| G256937-1 | 5/9 Secondary reference Raytheon Company Dba Raytheon Co |
NSN 5340-01-343-5749 is a Cover,access, manufactured by Raytheon Company Div Corp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-343-5749 has 1 manufacturer part number on file: G256937-1 (Raytheon Company Div Corp).
Key specifications for G256937-1: Distance From First Hole Centerline to End Along Width: 1.375 INCHES NOMINAL IN; Inside Width: 2.800 INCHES NOMINAL IN; Length: 2.920 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-C-5541,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE. 20 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.