CATERPILLAR: LOCKNUT - 1438151This LOCKNUT - 1438151 is a genuine OEM spare part by CATERPILLAR. It is also available as an alternative (interchange/cross code) aftermarket part. This locknut is compatible with various models, including MINI HYDRAULIC EXCAVATORS like 307D and 308D, as well as EXCAVATORS such as 308C, 311D LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 313B, 313D, 313D2, and 313D2 LGP. It is also suitable for WHEEL EXCAVATORS like M315C and M316C.Product Specifications:- Weight: 3.6 lbs- Length: 10.1 cm- Width: 10.1 cm- Depth: 10.1 cmShop now and ensure the proper functioning and durability of your CATERPILLAR equipment with this reliable locknut.