The Washer,recessed, cataloged under National Stock Number 5310-00-559-0660, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-559-0660 |
| Primary Part Number | 351503 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Lockheed Martin Corp |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hole Diameter | 1.755 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN |
| Recess Diameter | 1.860 INCHES NOMINAL IN |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Outside Diameter | 2.250 INCHES NOMINAL IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 351503 PRIMARY | Lockheed Martin Corp (USA) |
NSN 5310-00-559-0660 is a Washer,recessed, manufactured by Lockheed Martin Corp, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-559-0660 has 1 cross-referenced part number: 351503 (Lockheed Martin Corp).
There is 1 known substitute for 5310-00-559-0660: 5961-00-469-2189. Verify interchangeability with system specifications before substitution.
Key specifications for 351503: Material: ALUMINUM ALLOY 2024 OVERALL; Style Designator: RECESSED; Material Document and Classification: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Hole Diameter: 1.755 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.