The Washer,flat, cataloged under National Stock Number 5310-01-604-6418, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Marine Power International Pty Ltd Brunswick Asia Pacific Group. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-604-6418 |
| Primary Part Number | 12-856774 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Marine Power International Pty Ltd Brunswick Asia Pacific Group |
| Status | ACTIVE |
| Overall Diameter | 0.750 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.406 INCHES NOMINAL IN |
| Thickness | 0.105 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 |
|---|---|
| 12-856774 | Marine Power International Pty Ltd Brunswick Asia Pacific Group (AUS) |
| Reference | Meaning |
|---|---|
| 856774 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-604-6418 is a Washer,flat, manufactured by Marine Power International Pty Ltd Brunswick Asia Pacific Group, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-604-6418 has 1 manufacturer part number on file: 12-856774 (Marine Power International Pty Ltd Brunswick Asia Pacific Group).
Key specifications for 12-856774: Overall Diameter: 0.750 INCHES NOMINAL IN; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 7 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.