We are pleased to confirm immediate availability for 558650 (Washer Flat), carrying NSN 5310-00-990-5663 and manufactured by Kito Mfg Co Ltd (CAGE code S0254). This certified component is classified under FSG 53 Hardware and Abrasives/FSC 5310 Nuts and Washers (NIIN: 00-990-5663), meeting all military specifications for guaranteed traceability and performance compliance.
To receive a rapid quote for part 558650 (15-minute response guaranteed), please complete the form below. Providing detailed requirements ensures our specialists can quickly deliver competitive pricing, verified availability, and exact specification matching for NSN 5310-00-990-5663. Rest assured, you’ll receive the precise aerospace component your project demands.
Note : We Will Not Share Your Information To Any Third Parties.
Aviation Purchasing Platform is a trusted sourcing solution owned and operated by ASAP Semiconductor—an AS9120B, ISO 9001:2015, and FAA 0056B certified distributor. With access to over 10 million national stock numbers (NSNs) across 26+ federal supply categories, we specialize in procuring rare, obsolete, and long-lead-time components, including Kito Mfg Co Ltd parts. Our industry-leading turnaround and delivery ensure rapid fulfillment for critical aerospace and defense needs.
Every 5310-00-990-5663—including this part—is uniquely labeled to reflect its integration into the U.S. DoD supply system. As a National Stock Number, it signifies compliance with NATO and U.S. Department of Defense standards, ensuring traceability, quality, and interoperability across allied military operations.
| NSN | FSC | NIIN | CLS | Hazmat | DEMIL | Cancelled NSN |
|---|---|---|---|---|---|---|
| 5310-00-990-5663 Item Description: Washerflat | 5310 | 009905663 | 0 | N | ||
| CIIC | HCC | ESD | PMIC | Criticality | ENAC | |
| U | U | |||||
| Part Number | ISC | RNVC | RNCC | HCC | MSDS | SADC |
| 558650 | 2 | 9 | 3 |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAGR | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| AAUB | HOLE DIAMETER | 0 997 INCHES MINIMUM AND 0 998 INCHES MAXIMUM |
| ABMW | PERIPHERAL SHAPE STYLE | ROUND |
| ABMX | CENTER HOLE SHAPE STYLE | ROUND |
| ABNM | THICKNESS | 0 129 INCHES MINIMUM AND 0 131 INCHES MAXIMUM |
| ADAV | OVERALL DIAMETER | 1 360 INCHES MINIMUM AND 1 370 INCHES MAXIMUM |
| HEAT | HEAT TREATMENT | AS FABRICATED |
| MATT | MATERIAL | STEEL COMP 302 OVERALL OR STEEL COMP 303 OVERALL OR STEEL COMP 304 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
Million
Parts Sold
Million
Parts Avalilable
Thousand
Happy Customers
Thousand
Daily Parts Searches
|
AS9120B and ISO 9001:2015 |
|
Aviation Suppliers Association Member |
|
FAA AC 0056B Accredited |
|
AS 6081:2012 Certification |
|
ESD S20.20-2014 Certification |
