PLATE 5I5185 - Caterpillar

Take care to avoid mixing metric and inch fasteners. Mismatched or incorrect fasteners can result in mechanical damage or malfunction, or possible personal injury. Original fasteners removed during disassembly should be saved for assembly when possible. If new ones are required, caution must be taken to replace with one that is of same part number and grade.Metric thread fasteners are identified by material strength (grade) numbers on bolt heads and nuts. Numbers on bolts will be 8.8, 10.9, etc. Numbers on nuts will be 8, 10, etc.Standard Torque For Metric Fasteners
Exceptions to these torques are given in this specification module where needed. Refer to the Torque Specification module, Form No. SENR3130, for additional standard torques for both metric and inch fasteners.