The Washer,flat, cataloged under National Stock Number 5310-01-265-6690, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Kyb Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-265-6690 |
| Primary Part Number | 21011-32301 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Kyb Corporation |
| Status | ACTIVE |
| Overall Diameter | 14.0 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 10.3 MILLIMETERS NOMINAL MM |
| Thickness | 0.8 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 21011-32301 | Kyb Corporation (JPN) |
| Reference | Meaning |
|---|---|
| 21011-32301 | 5/9 Secondary reference Kayaba Industry Co. Ltd |
| 321975 | 3/9 Design control — primary reference Hyster-Yale Group, Inc. |
NSN 5310-01-265-6690 is a Washer,flat, manufactured by Kyb Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-265-6690 has 1 manufacturer part number on file: 21011-32301 (Kyb Corporation).
Key specifications for 21011-32301: Overall Diameter: 14.0 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: COPPER ALLOY OVERALL. 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.