The Washer,flat, cataloged under National Stock Number 5310-01-149-5384, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company. 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 | 5310-01-149-5384 |
| Primary Part Number | 18100-022 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 CLASS 3 TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.258 INCHES MINIMUM AND 0.262 INCHES MAXIMUM IN |
| Thickness | 0.031 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 |
|---|---|
| 18100-022 PRIMARY | Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company (USA) |
NSN 5310-01-149-5384 is a Washer,flat, manufactured by Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-149-5384 has 1 manufacturer part number on file: 18100-022 (Marathonnorco Aerospace, Inc. Dba Marathon Power Technologies Company).
Key specifications for 18100-022: Surface Treatment Document and Classification: QQ-P-416 CLASS 3 TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.553 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: CADMIUM OVERALL. 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.