Nut Lock

Ensure optimal performance and safety with the Case Construction Nut Lock #380424. Designed for heavy equipment, this durable locking nut provides secure fastening, enhancing the reliability of your machinery. Perfect for maintaining peak operational efficiency on the job site.

Compatible equipment

This part fits COMPACT WHEEL LOADER W/MONO BOOM (NA), COMPACT WHEEL LOADER TIER 3, COMPACT WHEEL LOADER STD TC - TIER 4, COMPACT WHEEL LOADER STD ZB - TIER 4, WILLOW HEADER, NH HAY TEDDER, TRENCHER BASIC-PTO DRIVE, VERSATILE COMBINE - 1981, VERSATILE COMBINE - 1986, VERSATILE COMBINE, FLEXIBLE GRAIN HEAD, 30F - FLEXIBLE GRAIN HEAD (BR), COMBINE HEADER, GRAIN HEADERS, 15 - GRAIN HEADER (CHN), 17 - GRAIN HEADER (CHN), 20 - GRAIN HEADER (CHN), PLANTER 12 ROW 2 POINT HITCH FRONT FOLD, PLANTER 16 ROW 2 POINT HITCH FRONT FOLD, PLANTER 16 ROW DRAW BAR FRONT FOLD, PLANTER 24 ROW 2 POINT HITCH FRONT FOLD, PLANTER 24 ROW DRAW BAR FRONT FOLD, PLANTER 24 ROW 30IN SPAC FRONT FOLD, PLANTER 32 ROW 30IN SPAC FRONT FOLD, PLANTER 36 ROW 20IN SPAC FRONT FOLD, PLANTER 36 ROW 22IN SPAC FRONT FOLD, PLANTER 36 ROW 30IN SPAC FRONT FOLD, PLANTER 47 ROW 15IN SPAC FRONT FOLD, COMPACT WHEEL LOADER TIER 2 (NA), SMALL WHEEL LOADER, SMALL WHEEL LOADER (EUR), COMPACT WHEEL LOADER HS ZB - TIER 4, ROLABAR RAKE PIVOT TONGUE HITCH ASSEMBLY, 3 CYL AG HIGHWAY TRACTOR, PRECISION AIR CART, GRAIN HEADER, 16FT - GRAIN HEADER, 18FT - GRAIN HEADER, 20FT - GRAIN HEADER, 22FT - GRAIN HEADER, 25FT H - GRAIN HEADER, 25FT L - GRAIN HEADER, 30FT - GRAIN HEADER, 35FT - GRAIN HEADER, 41FT - GRAIN HEADER, PATRIOT SPRAYER, SMALL WHEEL LOADER (TIER II) (EUROPE), 3 CYL AG TRACTOR ALL PURPOSE, NH WINDROW PICK-UP UNIT, WINDROW PICK-UP - FOR FX-96-SERIES, 3 CYL VINEYARD TRACTOR, 3 CYL HIGHWAY TRACTOR, 3 CYL AG NARROW TRACTOR, 3 CYL NARROW ORCHARD TRACTOR, DISCBINE DISC MOWER CONDITIONER, CASE IH TRACTOR (NORTH AMERICA), TITAN FLOATER, ROW INDEPENDENT MAIZHEADER (NA), CASE CRAWLER TRACTOR, 3 CYL TRACTOR LOADER BACKHOE, 3 CYL ORCHARD TRACTOR, 4 CYL AG TRACTOR ALL PURPOSE, 4 CYL AG NARROW TRACTOR, 4 CYL ORCHARD TRACTOR, HESSTON BIG RECTANGULAR BALER - BELGIUM, 4 CYL AG TRACTOR 10 SERIES, CASE IH DIESEL TRACTOR, 66 - FIAT TRACTOR, 66 DT - FIAT TRACTOR, CASE LONG TRACK CRAWLER TRACTOR, IND - CASE CRAWLER TRACTOR, 4 CYL TRACTOR LOADER BACKHOE, 4 CYL AG TRACTOR 40 SERIES, NH SQUARE BALER, SMALL RECTANGULAR BALER, NH SMALL SQUARE BALER, 4 CYL AG TRACTOR FLAT DECK, LOADER BACKHOE (NORTH AMERICA) (ASN JJG0020000), CASE SUPER-K CONSTRUCTION KING LOADER BACKHOE, NH BIG BALER, TURBO LOADER BACKHOE, 4 CYL AG TRACTOR MEXICO, NH BIG BALER W/CUTTER, LIQUID SYSTEM APPLICATOR - 2003, 4 CYL AG TRACTOR 10 SERIES (U.K. ONLY), 88 DT - FIAT TRACTOR, 4 CYL ORCHARD TRACTOR 10 SERIES, 4 CYL ORCHARD TRACTOR 40 SERIES, 4 CYL AG TRACTOR FLAT DECK 10 SERIES, 66 - FIAT HIGH CLEARANCE TRACTOR, 66 DT - FIAT HIGH CLEARANCE TRACTOR, 88 - FIAT TRACTOR, AXIAL-FLOW COMBINE, COMBINE - TIER 4 COMMON CAB, COMBINE - TIER 4, COMBINE - TIER 4B (NA) - 2016, COMBINE - TIER 4B (NA) ASN YFG230001, COMBINE - TIER 4B (NA) BSN YFG230000, MY18 COMBINE TIER 4B (NA), MY19 COMBINE TIER 4B (NA), MY20 COMBINE TIER 4B (NA), ROW INDEPENDENT MAIZHEADER (NA) - 2012, ROW INDEPENDENT MAIZHEADER (NA) - 2015, 6 CYL AG TRACTOR, 6 CYL ORCHARD TRACTOR, 6 CYL AG TRACTOR 40 SERIES, 6 CYL ORCHARD TRACTOR 40 SERIES, 90 - FIAT TRACTOR, 90 DT - FIAT TRACTOR, SERIES - 6 CYL TRACTOR, COMBINE - BASE UNIT, MY18 COMBINE TIER 4B REDEKOP CHOPPER OPTION (NA), 4WD MOTOR GRADER (LIVERY) - TIER 4, 4WD MOTOR GRADER MY20 - STAGE V, AWD MOTOR GRADER (LIVERY) - TIER 4, AWD MOTOR GRADER MY20 - STAGE V, 6 CYL AG TRACTOR FLAT DECK, GRAPE HARVESTER, NH SQUARE BALER - FRANCE, CASE IH 4WD TRACTOR, BIG RECTANGULAR BALER ''ROTOR CUTTER'', BIG RECTANGULAR BALER ''PACKER CUTTER'', BIG RECTANGULAR BALER, BIG RECTANGULAR BALER ''''PACKER CUTTER'''' FROM S/N XXX238001 ONWARDS, BIG RECTANGULAR BALER ''''PACKER CUTTER'''' UNTIL S/N XXX237999, BIG RECTANGULAR BALER UNTIL S/N XXX237999, BIG RECTANGULAR BALER FROM S/N XXX238001 ONWARDS, SMALL SQUARE BALER, SMALL SQUARE BALER - 2008, HAYLINER SMALL SQUARE BALER, PLUS BIG RECTANGULAR BALER, ROTOR CUTTER - HIGH DENSITY, COMBINE - TIER 4B (NA), REVELATION COMBINE - TIER 4B (NAFTA), TIER4 COMBINES, REVELATION COMBINE - TIER 5 (NAFTA), COMBINE - TIER 3, COMBINE, COMBINE - 13L ENGINE, COMBINE - MADE IN U.S.A., TIER3 COMBINES, COMBINE TRACKS - TIER 3, COMBINE - TIER 4 (NA), COMFORT CAB (NARROW) - 94 SERIES, SUPER COMFORT CAB (NARROW) - 94 SERIES, COMFORT CAB (WIDE) - 94 SERIES, CASE IH CX-SERIES DIESEL TRACTOR, CRAWLER EXCAVATOR - TIER 4, NH MID-SIZE BALER, BIG RECTANGULAR BALER - BELGIUM, BIG RECTANGULAR BALER / CUTTER, BIG RECTANGULAR BALER / SILAGE, BIG RECTANGULAR BALER - BELGIUM / SILAGE, WINDROWER ATTACHMENT, MINI CRAWLER EXCAVATOR (S/N 9029 AND AFTER), MINI CRAWLER EXCAVATOR (S/N 3136 AND AFTER), MINI CRAWLER EXCAVATOR (S/N 2065 AND AFTER), MINI CRAWLER EXCAVATOR - BTW PW11-30001 - PW12-40000, MINI CRAWLER EXCAVATOR (S/N XXXX0236 AND AFTER), CAPACITY - GRAIN HEADER, AG TRACTOR (MEX), FLOATER - 1999, FLOATER - 2002, FLOATER, LIQUID SYSTEM APPLICATOR, FORAGE HARVESTER - TIER 4 (NA), FORAGE HARVESTER, FORAGE HARVESTER - TIER 2 (NA), RICHIER EXCAVATOR, CARTED WHEEL RAKE, DISC MOWER, BALER, ROTOR CUTTER - HIGH PERFORMANCE DENSITY, BIG RECTANGULAR BALER ''''PACKER CUTTER'''', BIG RECTANGULAR BALER ''''ROTOR CUTTER'''', WHEEL LOADER TIER 2 (EU), TRACTOR - TIER 3 LIMITED, TRACTOR - TIER 3 VALUE, ACTIVEDRIVE 4 TRACTOR - STAGE V (MADE IN BASILDON), TRACTOR - TIER 4B, TRACTOR - TIER 4B - MY18 (MADE IN BASILDON), CASE IH MAXXUM DIESEL TRACTOR, CASE IH MX SERIES TRACTOR, CASE IH TRACTOR, MAXXUM X-LINE TRACTOR, VALUE TRACTOR, 4WD TRACTOR, TRACTOR - MY17 T4B CVT (NA), TRACTOR - MY17 T4B PST (NA), TRACTOR 4WD - TIER 4B (NA), TRACTOR (SCRAPER) - MY17 T4B PST (NA), CASE IH ROUND BALER, SILAGE PACK ROUND BALER, CASE IH SQUARE BALER, SPRAYER, SPX-SERIES PATRIOT SPRAYER, 4WD TRACTOR (ASN Z6F105001) (NA), CASE IH 4WD TRACTOR (AFTER S/N JEE0099501), CASE IH 4WD TRACTOR (BSN JEE0099501), CASE IH 4WD TRACTOR (BTW Z6F100023 - Z6F105001), TRACTOR - TIER 4B - MY18, ELECTRO COMMAND TRACTOR - STAGE V, TRACTOR - TIER 3 DELTA, TRACTOR - TIER 3 PLUS, EMISSIONISED TRACTOR, DELTA TRACTOR, PLUS/DELUXE TRACTOR, TRACTOR, NON-EMISSIONISED TRACTOR, NH COMBINE, NH CONVENTIONAL COMBINE, GRAINHEADERS (17FT-20FT-24FT-30FT), COMPACT WHEEL LOADER - TIER 2 (N.A.), MINI WHEEL LOADER _ TIER 2 (EUR), MINI WHEEL LOADER - TIER 2 (EUR) including models 121E, 121E SERIES 3, 121F, 130FB, 169, 19AB5700, 2000V, 2000VI, 2000VII, 2020, 2030, 2040, 2050, 2060, 2150, 2160, 21D, 21E, 21E SERIES 3, 21F, 221D, 221E, 221E SERIES 3, 221F, 230 6 BAR.

Frequently asked questions

What is the part number?

The manufacturer part number is 380424.

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.