Lock Washer

Enhance the durability of your heavy equipment with Case Construction Lock Washer #80679. Designed for optimal performance, this reliable component ensures secure fastening, reducing wear and tear in demanding environments. Perfect for maintaining your machinery’s efficiency and longevity.

Compatible equipment

This part fits BACKHOE, DAVIS TASKFORCE SUPER TRENCHER, CASE CRAWLER EXCAVATOR, CASE CRUZ-AIR WHEELED EXCAVATOR, CASE CRAWLER TRACTOR, CRAWLER DOZER, POCLAIN CRAWLER EXCAVATOR, CASE LOGGER CRAWLER EXCAVATOR, CASE FELLER/BUNCHER CRAWLER EXCAVATOR, DROTT CRAWLER EXCAVATOR, SERIES - CASE UNI-LOADER SKID STEER LOADER, CASE UNI-LOADER SKID STEER LOADER, CASE UNI-LOADER SKID STEER LOADER W/DEUTZ ENGINE, WINCH, CASE HORIZONTAL DIRECTIONAL DRILLING MACHINE, SMALL WHEEL LOADER, COMPACT WHEEL LOADER TIER 3, UTILITY BACKHOE, LOADER AND BACKHOE, LOADER, DAVIS FLEETHOE TRENCHER, CASE/BELOIT SKID KING WHEEL LOADER, CASE SKID KING WHEEL LOADER, DROTT SERIES-A CRAWLER EXCAVATOR, CASE FORKLIFT, BACKHOE AND LOADER FOR 530CK TRACTORS, BACKHOE FOR W7, W9A, W9B, W10, CASE WHEEL TRACTOR, BACKHOE AND LOADER, BACKHOE FOR 310G AND 450 CRAWLER, BACKHOE FOR 580CK, BACKHOE FOR W SERIES RIGID LOADERS, DROTT ENGINES FOR 35 CRAWLER - B SERIES, CASE ENGINE, BACKHOE FOR CRAWLER MODELS 750, 850, 1150, BACKHOE FOR 680CK TRACTOR, BACKHOES FOR CRAWLER MODELS 750, 850, 1150, SERIES A INTERNATIONAL LOADER TRACTOR, BACKHOE FOR 450, 450B, 850, 850B, AND W14, CASE LOADER BACKHOE ATTACHMENTS, LOADER AND BACKHOE FOR 580CK SERIES B, DROTT SERIES-B CRAWLER EXCAVATOR, CASE TRENCHER, CASE G.P. & L.C.G. WHEEL TRACTOR, CASE LOADER/LANDSCAPER TRACTOR, DROTT SERIES-B FELLER/BUNCHER CRAWLER EXCAVATOR, CASE INDUSTRIAL TRACTOR, CASE WHEEL TRACTOR W/LOADER BACKHOE, CASE CONSTRUCTION KING WHEEL TRACTOR, CASE LONG TRACK CRAWLER TRACTOR, CASE CONSTRUCTION KING LOADER BACKHOE, CASE LOAD KING WHEEL LOADER, CASE TERRATRAC CRAWLER TRACTOR, CASE CONSTRUCTION KING FORKLIFT, IND - CASE CRAWLER TRACTOR, LOADER LANDSCAPER, SERIES 3 LOADER LANDSCAPER TIER 3 - ASN N8C510600, LOADER LANDSCAPER - LIVERY, CASE CONSTRUCTION KING TRACTOR W/SHUTTLE TRANSMISSION, CASE CONSTRUCTION KING WHEEL TRACTOR W/HYDROSTATIC TRANSMISSION, ELECTRIC FOUR WHEEL DRIVE, CASE CONSTRUCTION KING LOADER BACKHOE - SUPPLEMENT, CASE CONSTRUCTION KING LOADER BACKHOE - 4WD SUPPLEMENT, CASE CONSTRUCTION KING LOADER BACKHOE - TURBO SUPPLEMENT, SERIES 2 LOADER BACKHOE - ASN JJG0239360, 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, CASE CONSTRUCTION KING FORKLIFT TRACTOR, FORKLIFT - LIVERY, FORKLIFT, TURBO LOADER BACKHOE, LOADER BACKHOE, SERIES 2 LOADER BACKHOE - ASN JJG0210575, CASE TERRATRAC GASOLINE CRAWLER TRACTOR, CASE TURBO HORIZONTAL DIRECTIONAL DRILLING MACHINE, CASE WHEEL LOADER, WHEEL LOADER - T4B - STD LINKAGE, WHEEL LOADER - T4B - XR LINKAGE, WHEEL LOADER - T4B - XT LINKAGE, CASE SERIES-2 TELESCOPIC HANDLER, CASE TELESCOPIC HANDLER, CASE TIER-2 TELESCOPIC HANDLER, DAVIS TASK FORCE TRENCHER, POCLAIN WHEELED EXCAVATOR, MOTOR GRADER - ASN 020001, MOTOR GRADER TIER 2- BTW 020101-020187, CASE TURBO TRENCHER, MOTOR GRADER - ASN 022001, MOTOR GRADER TIER 2 - ASN 022101, MOTOR GRADER - ASN N5AF04007, MOTOR GRADER - ASN 024001, MOTOR GRADER TIER 2 - BTW 024102-024129, CASE SKID STEER LOADER, BENTONITE INJECTOR SYSTEM - 2000, BENTONITE INJECTOR SYSTEM / 2000, MAXI-SNEAKER CABLE LAYER, SERIES-B MAXI-SNEAKER CABLE LAYER, SERIES-B MINI-SNEAKER CABLE LAYER, CRAWLER EXCAVATOR TIER 3, CRAWLER EXCAVATOR, CASE BACKHOE, FLEETLINE 16+4 TRENCHER, FLEETLINE 25+4 TRENCHER, CASE TRENCHER W/1.8L DIESEL ENGINE, CASE TRENCHER W/2.1L ENGINE, MINOTAUR COMPACT DOZER LOADER, ENGINE - 504160467 - 84455196, ENGINE 504334624 - 87486953, ENGINE - 504160468 - 84457641, ENGINE 504334626 - 87486951, CASE TRENCHER W/LOADER BACKHOE, DAVIS FLEETLINE 70+4 TRENCHER, SNEAKER - SERIES-C TRENCHER, SNEAKER C - 25+4XP TRENCHER, DAVIS MINI-SNEAKER CABLE LAYER, DAVIS FLEETLINE 30+4 SUPER TRENCHER, DAVIS FLEETLINE 40+4 SUPER TRENCHER, DAVIS FLEETLINE 30+4 TRENCHER, DAVIS FLEETLINE 40+4 TRENCHER, SMALL ARTICULATED LOADER, SKID STEER LOADER, SKID STEER LOADER - NRC, SKID STEER LOADER - TIER 4F - NA, SKID STEER LOADER - S5 NA, SKID STEER LOADER - TIER 3 - ROW, REGULATED NA - TIER 4 - MY26, REGULATED NA, TIER 4 - MY26, MINI TRACK LOADER 1000 - STAGE V, COMPACT TRACK LOADER - TIER 4F - NA, COMPACT TRACK LOADER, CASE UNIT LOADER, CASE WHEEL LOADER W/POD CAB - NEW YORK STATE SPECIAL, CASE ARTICULATED WHEEL LOADER including models 26S, 1000, 1080, 1080B, 1085B, 26D, 1085C, 1086B, 1150B, 1150D, 1150E, 1150G, 1150H, 1150M LT, 1150M WT, 1150M WT/LGP, 1155D, 1155E, 115CL, 1187, 1187B, 1187C, 120, 1280, 1280B.

Frequently asked questions

What is the part number?

The manufacturer part number is 80679.

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.