Nut Hex

Enhance your heavy equipment’s performance with the Case Construction Nut Hex #129-770. Designed for durability and precision, this essential component ensures secure connections, making it ideal for various applications in the construction industry. Trust Case for reliability and strength.

Compatible equipment

This part fits CASE AGRI-KING TRACTOR (PRIOR TO S/N 8675001), CASE AGRI-KING TRACTOR (S/N 8675001 & AFTER), CASE AGRI-KING DIESEL TRACTOR, CASE CRAWLER TRACTOR (NORTH AMERICA), CASE CRAWLER TRACTOR, CASE AGRI-KING TRACTOR (PRIOR TO S/N 8736001), CASE AGRI-KING TRACTOR (S/N 8736001 & AFTER), CASE AGRI-KING TRACTOR (PRIOR TO S/N 8727601), CASE AGRI-KING TRACTOR (S/N 8727601 & AFTER), CASE AGRI-KING TRACTOR (''''SPIRIT OF ''76'''' OPTION), CASE DIESEL TRACTOR (PRIOR TO S/N 17895000), CASE DIESEL TRACTOR, CASE DIESEL TRACTOR (PRIOR TO S/N 17897500), CASE TRACTOR, CASE LONG TRACK CRAWLER TRACTOR, CASE DIESEL ENGINE & POWER UNIT (SIZE 111), IND - CASE CRAWLER TRACTOR, CASE CONSTRUCTION KING LOADER BACKHOE, CASE CONSTRUCTION KING LOADER BACKHOE - TURBO SUPPLEMENT, LOADER BACKHOE (NORTH AMERICA), CASE SUPER-E CONSTRUCTION KING LOADER BACKHOE, CASE TRENCHER, CASE TURBO TRENCHER, TRENCHER SUPPLEMENT (NORTH AMERICAN HOMOLOGATION), CASE AGRI-KING TRACTOR (PRIOR TO P.I.N. 8675001) including models 1070, 1090, 1150C, 1150D, 1150E, 1150G, 1150H, 1155D, 1155E, 1170, 1175, 1270, 1370, 1450B, 1455B, 1550, 1570, '1570, 1896, 2090, 2094, 2096, 2290, 2294, 2390.

Frequently asked questions

What is the part number?

The manufacturer part number is 129-770.

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.