The Washer,flat, cataloged under National Stock Number 5310-01-507-7950, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Cnim Systemes Industriels. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-507-7950 |
| Primary Part Number | WTP000289498A |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Cnim Systemes Industriels |
| Status | ACTIVE |
| Overall Diameter | 18.5 MILLIMETERS NOMINAL MM |
| Peripheral Shape Style | ROUND |
| 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 |
|---|---|
| WTP000289498A | Cnim Systemes Industriels (FRA) |
| 90508-ZW1-B00 | Honda Motor Europe Ltd (FRA) |
| Reference | Meaning |
|---|---|
| 90508-ZW1-B00 | 5/9 Secondary reference Slidell Marine Inc |
| 90508-ZW1-B00 | 3/9 Design control — primary reference American Honda Motor Co., Inc. Div Honda Marine |
NSN 5310-01-507-7950 is a Washer,flat, manufactured by Cnim Systemes Industriels, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-507-7950 has 2 manufacturer part numbers on file: WTP000289498A (Cnim Systemes Industriels), 90508-ZW1-B00 (Honda Motor Europe Ltd).
Key specifications for WTP000289498A: Overall Diameter: 18.5 MILLIMETERS NOMINAL MM; Special Features: WASHER FOR ZW54-F0500A PROPELLER AND SHAFT; Peripheral Shape Style: ROUND; End Item Identification: 8MHS. 2 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.