PIN AS 1883357 - Caterpillar

Mismatched or incorrect fasteners can result in damage or malfunction, or possible injury.Take care to avoid mixing metric dimensioned fasteners and inch dimensioned fasteners.
Prior to installation of any hardware, ensure that components are in near new condition. Bolts and threads must not be worn or damaged. Threads must not have burrs or nicks. Hardware must be free of rust and corrosion. Clean the hardware with a noncorrosive cleaner. Do not lubricate the fastener threads except for the rust preventive. The rust preventive should be applied by the supplier of that component for purposes of shipping and storage. Other applications for lubricating components may also be specified in the Service Manual.When possible, save the original fasteners that are removed from the machine for assembly. If new fasteners are needed, the new fasteners must be the same size as the fasteners that are being replaced and the same grade as the fasteners that are being replaced.For additional torque specifications that are not included in this section, refer to Service Manual, SENR3130, "Torque Specifications", which is available from your dealer.