The Washer,flat, cataloged under National Stock Number 5310-00-446-6489, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Kell-Strom Tool International, Inc.. Government technical data includes 11 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-446-6489 |
| Primary Part Number | C4WM1297-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Kell-Strom Tool International, Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.800 INCHES NOMINAL IN |
| Heat Treatment | T-4 SOLUTION HEAT TREATED, NATURAL AGED |
| Material Document and Classification | QQ-A-267 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.520 INCHES NOMINAL IN |
| Thickness | 0.150 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 |
|---|---|
| C4WM1297-1 | Kell-Strom Tool International, Inc. (USA) |
| C4WM1297-1 | De Havilland Aircraft of Canada Limited (CAN) |
| Reference | Meaning |
|---|---|
| ER6489 | 5/9 Secondary reference E and R Laboratory Service Corp |
| 5310AC1-006 | 5/2 Secondary reference U.S. Government activity |
| 5310AC1-006-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-446-6489 is a Washer,flat, manufactured by Kell-Strom Tool International, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-446-6489 has 2 manufacturer part numbers on file: C4WM1297-1 (Kell-Strom Tool International, Inc.), C4WM1297-1 (De Havilland Aircraft of Canada Limited).
Key specifications for C4WM1297-1: Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.800 INCHES NOMINAL IN; Heat Treatment: T-4 SOLUTION HEAT TREATED, NATURAL AGED; Material Document and Classification: QQ-A-267 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 11 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.