Nut Lock

Enhance your heavy equipment’s performance with the Case Construction Nut Lock #D29126. Designed for durability and reliability, this essential component ensures secure fastening, keeping your machinery running smoothly on the toughest job sites. Perfect for Case equipment maintenance and repairs.

Compatible equipment

This part fits CASE CRAWLER TRACTOR, CASE CRAWLER TRACTOR (S/N 3019001 TO 3023000), CASE CRAWLER TRACTOR (S/N 3023001 TO 3032301), CASE CRAWLER TRACTOR (S/N 3032301 TO 3039619), CASE CRAWLER TRACTOR (S/N 3039619 & AFTER) including models 310E, 310F, 310G, 350, 350B.

Frequently asked questions

What is the part number?

The manufacturer part number is D29126.

Is this a genuine OEM part?

Yes. Southeastern Equipment stocks OEM and quality aftermarket parts for heavy equipment. Contact us if you need a specific OEM source or aftermarket option.

Will this fit my machine?

See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.

Where does this ship from?

Southeastern Equipment Company ships parts nationwide from our US warehouse. Orders placed before 2 PM ET typically ship same day.

Free pickup at any of our 17 branches across Ohio, Indiana, Michigan, and Kentucky. Select your preferred branch at checkout.

30-day no-fault returns. Bought the wrong part? Send it back for a full refund — no restocking fees, no minimums.