The Cover,access, cataloged under National Stock Number 5340-01-031-3251, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 17 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-031-3251 |
| Primary Part Number | AD31251-1 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Distance From First Hole Centerline to End Along Width | 0.750 INCHES NOMINAL IN |
| Corner Radius | 0.750 INCHES NOMINAL IN |
| Length | 6.500 INCHES NOMINAL IN |
| Distance Between Holes Along Length | 5.000 INCHES NOMINAL IN |
| Inside Corner Radius | 14.900 INCHES NOMINAL IN |
| Distance Between Holes Along Width | 5.000 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Material Document and Classification | AMS 4040 ALLOY 2024 TEMP O ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ARCHED |
| Securing Device Type | THREADED FASTENER |
| Distance From First Hole Centerline to End Along Length | 0.750 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Peripheral Shape Style | RECTANGLE, FOUR HOLES |
| Width | 6.500 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 2024 |
| Hole Diameter | 0.312 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Body Thickness | 0.063 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| AD31251-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5340-01-031-3251 is a Cover,access, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-031-3251 has 1 manufacturer part number on file: AD31251-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for AD31251-1: Distance From First Hole Centerline to End Along Width: 0.750 INCHES NOMINAL IN; Corner Radius: 0.750 INCHES NOMINAL IN; Length: 6.500 INCHES NOMINAL IN; Distance Between Holes Along Length: 5.000 INCHES NOMINAL IN. 17 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 5340-01-031-3251 has DEMIL Code Q. 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.