The Frame,air Inlet-Outlet, cataloged under National Stock Number 5340-01-377-9690, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 11 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-377-9690 |
| Primary Part Number | 1425AS427 |
| Item Name | Frame,air Inlet-Outlet |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Mounting Facility Diameter | 0.126 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Mounting Facility Quantity | 3 |
| Surface Treatment Document and Classification | MIL-C-5541 CL 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A |
| Overall Diameter | 2.810 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) |
| Overall Thickness | 0.130 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Material Document and Classification | QQ-A-250/11 T6 OR T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Aperture Diameter | 2.015 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE OVERALL |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| 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 |
NSN 5340-01-377-9690 is a Frame,air Inlet-Outlet, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-377-9690 has 2 manufacturer part numbers on file: 1425AS427 (Naval Air Warfare Center Aircraft Div), 1425AS427 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1425AS427: Mounting Facility Diameter: 0.126 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Mounting Facility Quantity: 3; Surface Treatment Document and Classification: MIL-C-5541 CL 1A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL A; Overall Diameter: 2.810 INCHES NOMINAL IN. 11 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.