The Washer,flat, cataloged under National Stock Number 5310-00-045-9685, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is De Havilland Parts & Aerostructures Limited Div Field Aviation. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-045-9685 |
| Primary Part Number | C4P10471-17 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | De Havilland Parts & Aerostructures Limited Div Field Aviation |
| Status | ACTIVE |
| Width Across Flats | 0.800 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN |
| Length | 0.860 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5526 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | RECTANGULAR |
| Material | IRON ALLOY 651 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.375 INCHES NOMINAL IN |
| Thickness | 0.093 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 |
|---|---|
| C4P10471-17 PRIMARY | De Havilland Parts & Aerostructures Limited Div Field Aviation (CAN) |
| Reference | Meaning |
|---|---|
| C4P10471-17 | 5/9 Secondary reference De Havilland Aircraft of Canada Limited |
NSN 5310-00-045-9685 is a Washer,flat, manufactured by De Havilland Parts & Aerostructures Limited Div Field Aviation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-045-9685 has 1 manufacturer part number on file: C4P10471-17 (De Havilland Parts & Aerostructures Limited Div Field Aviation).
Key specifications for C4P10471-17: Width Across Flats: 0.800 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN; Length: 0.860 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN; Material Document and Classification: AMS 5526 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.