Lock Nut

Enhance your heavy equipment’s performance with the Case Construction Lock Nut #80855. Designed for durability and reliability, this essential component ensures secure fastening, keeping your machinery running smoothly on the toughest job sites. Trust Case for quality and precision.

Compatible equipment

This part fits DAVIS TASKFORCE SUPER TRENCHER, WHEEL LOADER STD LINKAGE - STAGE V - 2025 UPDATES, DRIVE - WHEEL LOADER STD LINKAGE - STAGE V - 2025 UPDATES, WHEEL LOADER - STAGE V - TS - ZBAR, CASE CRUZ-AIR WHEELED EXCAVATOR, CASE CRAWLER TRACTOR, CRAWLER DOZER, CASE LOGGER CRAWLER EXCAVATOR, CASE FELLER/BUNCHER CRAWLER EXCAVATOR, CASE TRIMLINE TRENCHER, DROTT CRAWLER EXCAVATOR, CASE CRAWLER EXCAVATOR, CASE UNI-LOADER SKID STEER LOADER, SMALL WHEEL LOADER, COMPACT WHEEL LOADER HS, ZB, COMPACT WHEEL LOADER HSP, ZB - TIER 4 - MY23, COMPACT WHEEL LOADER STD EVO, ZB, COMPACT WHEEL LOADER STD, ZB, COMPACT WHEEL LOADER HSP, ZB, BACKHOE, DAVIS FLEETHOE TRENCHER, CASE SKID KING WHEEL LOADER, COMPACT WHEEL LOADER HPS EVO, XR, COMPACT WHEEL LOADER HSP EVO, ZB, COMPACT WHEEL LOADER STD, XR - TIER 4 - MY23, COMPACT WHEEL LOADER STD, XR, ARTICULATED TRUCK, BACKHOE FOR 450, 450B, 850, 850B, AND W14, CASE TRENCHER, CASE SKID STEER LOADER, SKID STEER - 410 NA BSN N7M480924, 410 EU BSN N7M468736, SKID STEER - SERIES 3, 410 NA ASN N7M480924, 410 EU ASN N7M468736, SKID STEER - 420NA BSN N7M466710, 420EU BSN N8M466713, SKID STEER - TIER 3, 420NA N7M466710, 420EU ASN N8M466713, COMPACT TRACK LOADER - BSN N7M455401, COMPACT TRACK LOADER - SERIES 3, ASN N7M455401, SKID STEER - SERIES 3, ASN 430 NA N7M479683, 430 EU N7M479546, SKID STEER BSN 430 NA N7M479683, 430 EU N7M479546, SKID STEER - BSN N7M425032, SKID STEER - TIER 3 , ASN N7M425032, SKID STEER - 440 NA BSN N8M474469, 440 EU BSN N8M407542, SKID STEER - SERIES 3, 440 NA ASN N8M474469, 440 EU ASN N8M407542, COMPACT TRACK LOADER - BSN N7M483467, SKID STEER - BSN N7M454787, SKID STEER - TIER 3 , ASN N7M454787, COMPACT TRACK LOADER - BSN N8M458846, COMPACT TRACK LOADER - TIER 3 , ASN N8M458846, SKID STEER, TIER 2, P.I.N. N7M458414 & PRIOR, SKID STEER, TIER 3, P.I.N. N7M464019 & AFTER, CASE LONG TRACK CRAWLER TRACTOR, COMPACT TRACK LOADER - BSN N7M464019, COMPACT TRACK LOADER - SERIES 3 ASN N7M464019, SKID STEER - TIER 3 ASN N7M452623, SKID STEER BSN N7M452623, CASE CONSTRUCTION KING LOADER BACKHOE, IND - CASE CRAWLER TRACTOR, LOADER LANDSCAPER, SERIES 3 LOADER LANDSCAPER TIER 3 - ASN N8C510600, LOADER LANDSCAPER - LIVERY, LOADER LANDSCAPER - TIER 4A ASN NCC570600, CASE CONSTRUCTION KING TRACTOR W/SHUTTLE TRANSMISSION, CASE CONSTRUCTION KING WHEEL TRACTOR W/HYDROSTATIC TRANSMISSION, CASE CONSTRUCTION KING LOADER BACKHOE - 4WD SUPPLEMENT, CASE CONSTRUCTION KING LOADER BACKHOE - TURBO SUPPLEMENT, SERIES 2 LOADER BACKHOE - ASN JJG0239360, BACKHOE LOADER - TIER 3 NRC, BACKHOE LOADER - TIER 4A - FROM PIN NCC560000, BACKHOE LOADER, BACKHOE LOADER, 2WD - TIER 3 NRC - MY18, BACKHOE LOADER, 2WD - TIER 3 NRC - MY19, BACKHOE LOADER, 2WD - TIER 4B - MY18, BACKHOE LOADER, 2WD - TIER 4B - MY19, BACKHOE LOADER, 4WD - TIER 3 NRC - MY18, BACKHOE LOADER, 4WD - TIER 3 NRC - MY19, BACKHOE LOADER, 4WD - TIER 4B - MY18, BACKHOE LOADER, 4WD - TIER 4B - MY19, CASE SUPER-D CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-E CONSTRUCTION KING LOADER BACKHOE, CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, LOADER BACKHOE - BSN JJG0239361, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 3 NRC - MY18, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 3 NRC - MY19, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 4B - MY18, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 4B - MY19, CASE CONSTRUCTION KING FORKLIFT, TURBO LOADER BACKHOE, LOADER BACKHOE, SERIES 2 LOADER BACKHOE - ASN JJG0210575, CASE TURBO HORIZONTAL DIRECTIONAL DRILLING MACHINE, CASE WHEEL LOADER, SERIES 1 CRAWLER - 07/01/2002 - 01/31/2005, SERIES 2 CRAWLER TIER 2 - 01/21/2005 - 06/16/2006, SERIES 3 CRAWLER TIER 2 - 06/20/2006 - 12/31/2008, DAVIS TRIMLINE TRENCHER, DAVIS TASK FORCE TRENCHER, WHEEL LOADER TIER3 ZBAR EC4 - BR, WHEEL LOADER TIER3 ZBAR EC4 FERTILIZER - BR, WHEEL LOADER TIER3 ZBAR EC4 SUGARCANE BAGASSE - BR, CRAWLER DOZER TIER 3, CASE WHEELED EXCAVATOR - LOW PROFILE CAB, 4WD MOTOR GRADER ELECTRO-HYDRAULIC - STAGE V, 4WD MOTOR GRADER MY20 - STAGE V, 6WD MOTOR GRADER ELECTRO-HYDRAULIC - STAGE V, AWD MOTOR GRADER MY20 - STAGE V, CASE TURBO TRENCHER, MAXI-SNEAKER CABLE LAYER, SERIES-B MAXI-SNEAKER CABLE LAYER, SERIES-B MINI-SNEAKER CABLE LAYER, COMPACT WHEEL LOADER STD, ELECTRIC, ZB, MINI CRAWLER EXCAVATOR ASN N4TN31001 -, PW12 - MINI CRAWLER EXCAVATOR - BTW PW11-30001 - PW12-40000, MINI CRAWLER EXCAVATOR, MINI CRAWLER EXCAVATOR - BTW PW11-30001 - PW12-40000, EXCAVATOR, FLEETLINE 16+4 TRENCHER, FLEETLINE 25+4 TRENCHER, CASE TRENCHER W/1.8L DIESEL ENGINE, CASE TRENCHER W/2.1L ENGINE, CASE TRENCHER W/LOADER BACKHOE, DAVIS FLEETLINE 70+4 TRENCHER, SNEAKER - SERIES-C TRENCHER, SNEAKER C - 25+4XP TRENCHER, DAVIS MINI-SNEAKER CABLE LAYER, 60 - DAVIS LINE LAYER ATTACHMENT, DAVIS FLEETLINE 30+4 SUPER TRENCHER, DAVIS FLEETLINE 40+4 SUPER TRENCHER, DAVIS FLEETLINE 30+4 TRENCHER, DAVIS FLEETLINE 7+2 TRENCHER, DAVIS FLEETLINE 40+4 TRENCHER, SMALL ARTICULATED LOADER, SKID STEER LOADER, SKID STEER LOADER - NRC, SKID STEER LOADER - TIER 3 - ROW, SKID STEER LOADER - TIER 4F - NA, REGULATED NA - TIER 4 - MY26, SKID STEER LOADER TIER 4, REGULATED NA, TIER 4 - MY26, COMPACT TRACK LOADER, COMPACT TRACK LOADER - NRC, COMPACT TRACK LOADER - TIER 3 - ROW, COMPACT TRACK LOADER - TIER 4F - NA, CASE UNIT LOADER, CASE FORKLIFT including models 1000, 1021G, 1021G X, 1021G2, 1085B, 1085C, 1086B, 1121G, 1121G X, 1121G2, 1150D, 1150E, 1150G, 1150H, 1150M LT, 1150M WT, 1150M WT/LGP, 1155D, 1155E, 1187, 1187B, 1187C, 120, 1280, 1450B.

Frequently asked questions

What is the part number?

The manufacturer part number is 80855.

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.