4B4863 Washer for Caterpillar

The 4B4863 is a flat washer used in head-bolt applications for Caterpillar C-Series equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The washer is identified for Caterpillar equipment by the part number 4B4863. Its listed application is the C-Series head-bolt category. The available product data does not specify individual machine models, engine arrangements, or a particular installation position beyond the head-bolt application.

Fitment

• Equipment manufacturer: Caterpillar
• Equipment or engine series: C-Series
• Application: head-bolt assembly
• Part type: flat washer

Cross-reference numbers

• 4B4863
• 4B-4863

The numbers 4B4863 and 4B-4863 identify the same washer designation, with the second format using a hyphen. No additional supplier or equipment-manufacturer numbers are provided in the available product data.

Specifications

The washer has a circular flat profile with a central opening for the associated fastener. The inner diameter specifies the opening through which the head bolt passes, while the outer diameter specifies the overall circular size of the washer. The stated thickness is the axial dimension of the washer.

The material is specified as soft steel with a minimum yield strength of 140 MPa. The listed dimensions are provided in both inch and centimetre fields where available. The product data does not state the bolt diameter, surface treatment, hardness, finish, packaging quantity, or whether any additional fastening components are included.