Slotted Nut 9/16IN-18 G5

Enhance your heavy equipment performance with the Case Construction Slotted Nut – 9/16in-18 G5 #425-139. Designed for durability and precision, this essential component ensures secure fastening for reliable operation in demanding construction environments.

Compatible equipment

This part fits CASE LOADER/LANDSCAPER TRACTOR (AFTER S/N JJE0001501), CASE LOADER/LANDSCAPER TRACTOR (BEFORE S/N JJE0001500), CASE CONSTRUCTION KING WHEEL TRACTOR, CASE LOAD KING WHEEL LOADER, CASE CONSTRUCTION KING FORKLIFT, CASE CONSTRUCTION KING TRACTOR (BSN 8685800) (NORTH AMERICA), CASE CONSTRUCTION KING TRACTOR W/SHUTTLE TRANSMISSION, CASE CONSTRUCTION KING WHEEL TRACTOR W/HYDROSTATIC TRANSMISSION, CASE CONSTRUCTION KING LOADER BACKHOE (UP TO S/N 9101501), CASE UNIT LOADER, CASE WHEEL LOADER (S/N 8174260 & AFTER) including models 380B, 430CK, 480B, 480CK, 500, 530CK, 580, 580B, 680CK, W5, W5A.

Frequently asked questions

What is the part number?

The manufacturer part number is 425-139.

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.