Nut Lock SL Thi

Enhance your heavy equipment’s performance with the Case Construction Nut Lock SL THI #131-63. Designed for durability and reliability, this essential component ensures secure fastening, keeping your machinery running smoothly in the toughest conditions. Perfect for construction professionals.

Compatible equipment

This part fits CASE CRUZ-AIR WHEELED EXCAVATOR, DROTT CRAWLER EXCAVATOR, CASE WHEEL LOADER (PRIOR TO S/N JAK0021701) (NORTH AMERICA), CASE WHEEL LOADER (S/N JAK0021701 & AFTER) (NORTH AMERICA), CASE WHEEL LOADER (NORTH AMERICA), CASE WHEEL LOADER, CASE WHEEL LOADER (S/N JEE0155000 & BEFORE), CASE WHEEL LOADER (PRIOR TO S/N 17754000) including models 1085B, 1085C, 1086B, 120, 621, 621B, 721, 721B, 721C, 821, 821B, 821C, W24C, W36.

Frequently asked questions

What is the part number?

The manufacturer part number is 131-63.

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.

Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.

Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.

30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.