The Washer,convex, cataloged under National Stock Number 5310-01-278-2013, is classified within Federal Supply Class 5310 (Nuts and Washers) 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 9 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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-278-2013 |
| Primary Part Number | 1698AS207 |
| Item Name | Washer,convex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TY II,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | CONVEX |
| Material Document and Classification | ASTM B209,T351 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Material Thickness | 0.130 INCHES NOMINAL IN |
| Color | OLIVE DRAB OVERALL |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 0.390 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1698AS207 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5310-01-278-2013 is a Washer,convex, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-278-2013 has 1 manufacturer part number on file: 1698AS207 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1698AS207: Surface Treatment Document and Classification: MIL-A-8625,TY II,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: CONVEX; Material Document and Classification: ASTM B209,T351 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.250 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.