2M5656 Nut for Caterpillar Equipment

2M5656 is a steel hex nut used in Caterpillar equipment, including Caterpillar engines, machines, and generator sets. The listed engine and equipment applications include the Caterpillar 3412, 3412D, 3412E, C27, 3508, 3508B, 3512, 3512B, 3516, and 3516B models. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is supplied as a nut for threaded fastening connections in the applicable Caterpillar assemblies. The product data identifies the nut by SKU 2M5656 and by the formatted part number 2M-5656.

Fitment

• Caterpillar 3412 engine and equipment applications
• Caterpillar 3412D engine and equipment applications
• Caterpillar 3412E engine and equipment applications
• Caterpillar C27 engine and equipment applications
• Caterpillar 3508 engine and equipment applications
• Caterpillar 3508B engine and equipment applications
• Caterpillar 3512 engine and equipment applications
• Caterpillar 3512B engine and equipment applications
• Caterpillar 3516 engine and equipment applications
• Caterpillar 3516B engine and equipment applications
• Caterpillar engine-machine applications
• Caterpillar engine-generator set applications

Fitment is specified by the equipment manufacturer, model, and application category listed above. The part is identified for use in Caterpillar engine, machine, and generator-set assemblies associated with these models. The exact installation location depends on the assembly in which the threaded connection is used.

Cross-reference numbers

Part number 2M5656 and the formatted designation 2M-5656 identify the same nut reference in the supplied product data. Verify the number stamped or listed for the applicable assembly before installation when several threaded fastening components are used in the same equipment system.

Specifications

The listed dimensions are length, width, and depth measurements provided for the part. Thread compatibility is specified as 1-14, while the connecting square is listed as 1 1/2 in. The nut has a zinc phosphate and oil coating, and the supplied weight specification is 0.4 lb.