8T-4121 11 mm ID Washer
Cat® Flat Washer (Clutch, Brake, Transmission)
Wholesale only · Full payment before shipment · Send your machine nameplate to confirm fitment
Fitment data not listed — send us your machine model or serial number to confirm.
Description
Cat® fastener parts are designed for specific applications based on size, strength, clamp load and past performance, information other manufacturers do not have. They are carefully selected to last until machine rebuild or end of life. While non-Cat hardware and fasteners may appear to fit your machine, no one else knows your equipment the way we do. Cat fasteners are manufactured to precise specifications to be durable, reliable and efficient. Strength and quality – fasteners meet or exceed ISO, ASTM, ASME and SAE requirements. Cat bolts, nuts and washers are specially designed to work together as a system to maximize clamp load. Coatings meet the special requirements of different applications (RoHS compliant). Cat bolts form a high-performance system with matching washers and nuts that produces consistently high clamping force. Cat fasteners help you build, maintain or repair for most machine and shop applications worldwide, and they can be trusted.
Specifications
| Thickness – 3 | 2.5 mm |
|---|---|
| Surface Finish | Zinc Flake |
| Outside Diameter (OD) – 2 | 21 mm |
| Coating Finish Note | Caterpillar is changing many washers from zinc plating to a zinc flake coated finish. The new coating increases corrosion protection to 720 hours. While existing stock of the current finish is being used up, you may receive washers with either finish during the sell-through period. |
| Outside Diameter | 21 mm (0.827 in) |
| Inside Diameter | 11 mm (0.433 in) |
| Inside Diameter (ID) – 1 | 11 mm |
| Hardened | Yes |
| Material | HARDENED STEEL |
| Gasket Type | Flat Washer |
| Fits Bolt Size | M10 mm (3/8 in) |
| Coating | Zinc flake provides moderate to high corrosion protection and repeatable assembly performance through built-in lubrication. Salt spray resistance: 720 hours with no red rust. Coating color – black (M12 and smaller), gray (larger than M12). |
| Thickness | 2.5 mm (0.098 in) |
Additional information
| Part Source | Genuine OEM |
|---|
