8M1871 Studs – Taper Lock for Caterpillar

8M1871 is a taper-lock stud used on Caterpillar equipment. It is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is a clamp-cone type stud with a tapered end for installation into a fine tap. The supplied part number is also written as 8M-1871. The stud has a standard coarse thread with a thread size of 3/8-16, meaning a 3/8-inch thread diameter and 16 threads per inch.

The available technical data identifies this stud for Caterpillar articulated dump trucks, cold planers, earthmoving compactors, and Caterpillar engine-machine applications. The fitment information below includes the equipment models listed for this part number.

Fitment

• Caterpillar articulated dump trucks
• Caterpillar cold planers
• Caterpillar earthmoving compactors
• Caterpillar engine-machine applications
• Caterpillar D350E
• Caterpillar D350E II
• Caterpillar D400E
• Caterpillar D400E II
• Caterpillar PM-565
• Caterpillar 826C
• Caterpillar 826G
• Caterpillar 825G
• Caterpillar 3304

Cross-reference numbers

• 8M1871
• 8M-1871

Specifications

The tapered end and clamp-cone configuration identify the installation style of the 8M1871 stud. The dimensional data is provided in both imperial and metric units where available. The 2 3/8-inch screw length is listed separately from the overall metric length supplied in the product data.

When matching the part, verify the equipment model, thread size, thread pitch, stud length, and tapered-end configuration against the removed component and the service parts information for the machine. The listed fitment covers the Caterpillar models and equipment types specified for SKU 8M1871.