Case Construction
OEM
Part No. 280734
Lock Washer
497 verified fitments
Select your machine to check fit
Ships nationwideUPS, USPS & freight
30-day returnsNew, unused parts
OEM guaranteedDirect from manufacturer
| Machine | Model | Years / S/N |
|---|---|---|
| Loader | TR340B | 2025 |
| Loader | TR310B | 2025 |
| Loader | TR270B | 2025 |
| Loader | TV370B | 2025 |
| Tractor | SL27 TR | — |
| Tractor | SL27 | — |
| Skid Steer | SV340B | 2025 |
| Skid Steer | SV280B | 2025 |
| Skid Steer | SR240B | 2025 |
| Skid Steer | SR210B | 2025 |
Enhance the durability of your heavy equipment with Case Construction Lock Washer #280734. 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.
Frequently asked questions
What is the part number?
The manufacturer part number is 280734.
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.
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.
WARNING:For California residents — Cancer and Reproductive Harm. www.P65Warnings.ca.gov
- Manufacturer part number
- 280734
- Brand
- Case Construction
- Condition
- OEM, new
- Category
- Case Construction
- Weight
- 0.01 lb
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.
All 497 fitments
| Machine | Model | Years / S/N |
|---|---|---|
| Loader | TR340B | 2025 |
| Loader | TR310B | 2025 |
| Loader | TR270B | 2025 |
| Loader | TV370B | 2025 |
| Tractor | SL27 TR | — |
| Tractor | SL27 | — |
| Skid Steer | SV340B | 2025 |
| Skid Steer | SV280B | 2025 |
| Skid Steer | SR240B | 2025 |
| Skid Steer | SR210B | 2025 |
| Skid Steer | SR270B | 2025 |
| Loader | C337 | 2025 |
| Loader | C327 | 2025 |
| Loader | C330 | 2025 |
| Loader | C345 | 2025 |
| Tractor | ML27 T | — |
| Tractor | ML27 | — |
| Skid Steer | L334 | 2025 |
| Skid Steer | L328 | 2025 |
| Skid Steer | L321 | 2025 |
| Skid Steer | L320 | 2025 |
| Loader | DL550 | — |
| Loader | TR270B | — |
| Loader | TR310B | — |
| Loader | TV620B | — |
| Loader | TV450B | — |
| Loader | TV370B | — |
| Loader | TR340B | — |
| Skid Steer | SV280B | — |
| Skid Steer | SR210B | — |
| Skid Steer | SR270B | — |
| Skid Steer | SR240B | — |
| Skid Steer | SV340B | — |
| Loader | C334 | — |
| Loader | C332 | — |
| Loader | C330 | — |
| Loader | C327 | — |
| Loader | C337 | — |
| Loader | C362 | — |
| Loader | C345 | — |
| Skid Steer | L334 | — |
| Skid Steer | L328 | — |
| Skid Steer | L321 | — |
| Loader | L350A | — |
| Tractor | FARMALL 40 | — |
| Tractor | FARMALL 45 | — |
| Tractor | FARMALL 50 | — |
| Loader | C175 | — |
| Skid Steer | L170 | — |
| Skid Steer | L175 | — |
| Skid Steer | L150 | — |
| Tractor | 6610S | — |
| Tractor | 8010 | — |
| Skid Steer | LS170 | — |
| Tractor | D40 | — |
| Tractor | 1530 | — |
| Tractor | 3230 | — |
| Skid Steer | L120 | — |
| Skid Steer | L125 | — |
| Tractor | 6610 | — |
| Tractor | 7610 | — |
| Skid Steer | L160 | — |
| Tractor | 5610S | — |
| Loader | C185 | — |
| Skid Steer | L180 | — |
| Tractor | 7610S | — |
| Skid Steer | L185 | — |
| Tractor | D45 | — |
| Loader | C190 | — |
| Skid Steer | L190 | — |
| Tractor | TC40 | — |
| Backhoe | 590 | — |
| Skid Steer | LS150 | — |
| Skid Steer | LS160 | — |
| Skid Steer | LS185.B | — |
| Skid Steer | L140 | — |
| Skid Steer | LS140 | — |
| Skid Steer | LS180 | — |
| Tractor | TB80 | — |
| Tractor | TC35D | — |
| Skid Steer | LS180.B | — |
| Loader | LT185.B | — |
| Loader | LT190.B | — |
| Skid Steer | LS125 | — |
| Skid Steer | LS120 | — |
| Skid Steer | LS190.B | — |
| Tractor | D35 | — |
| Skid Steer | SL40B | — |
| Trencher | 760 | — |
| Tractor | 7810S | — |
| Skid Steer | LS190 | — |
| Tractor | 7410 | — |
| Tractor | TC45D | — |
| Tractor | TC45 | — |
| Skid Steer | LX665 | — |
| Tractor | 6810S | — |
| Tractor | TC35 | — |
| Trencher | 660 | — |
| Backhoe | 555E | — |
| Backhoe | 675E | — |
| Tractor | TC40D | — |
| Tractor | D29 | — |
| Tractor | DX29 | — |
| Tractor | DX45 | — |
| Tractor | DX40 | — |
| Tractor | DX35 | — |
| Tractor | DX33 | — |
| Tractor | 7010 | — |
| Tractor | D33 | — |
| Tractor | TS115 | — |
| Tractor | D25 | — |
| Tractor | DX25 | — |
| Tractor | 1925 | — |
| Tractor | TC29D | — |
| Tractor | TC29 | — |
| Combine | TR99 | — |
| Trencher | 860 | — |
| Tractor | 3430 | — |
| Backhoe | 555D | — |
| Tractor | 3930 | — |
| Tractor | TC33D | — |
| Combine | TR89 | — |
| Skid Steer | LX885 | — |
| Tractor | 4630 | — |
| Tractor | TC33 | — |
| Skid Steer | LX465 | — |
| Tractor | TC25 | — |
| Skid Steer | L565 | — |
| Tractor | 5640 | — |
| Tractor | 6640 | — |
| Tractor | 7740 | — |
| Tractor | 8240 | — |
| Tractor | 8340 | — |
| Tractor | 9030V | — |
| Tractor | 9030E | — |
| Tractor | TC25D | — |
| Backhoe | 575E | — |
| Backhoe | 655E | — |
| Backhoe | 675D | — |
| Backhoe | NH85TLB | — |
| Tractor | 180-90 DT | — |
| Tractor | CS16 | — |
| Skid Steer | 1840 | — |
| Tractor | 7840 | — |
| Backhoe | 575D | — |
| Backhoe | 655D | — |
| Backhoe | FT110 | — |
| Tractor | 140-90 DT | — |
| Engine | BSD442 | — |
| Engine | BSD444T | — |
| Engine | BSD444 | — |
| Tractor | 1630 | — |
| Skid Steer | LX485 | — |
| Skid Steer | LX985 | — |
| Skid Steer | LX565 | — |
| Forklift | 584E | — |
| Skid Steer | LX865 | — |
| Skid Steer | L465 | — |
| Skid Steer | L865 | — |
| Tractor | 3930NO | — |
| Tractor | 4130NO | — |
| Tractor | 4630O | — |
| Loader | FR130 | — |
| Tractor | 4130 | — |
| Tractor | 1725 | — |
| Tractor | 5030O | — |
| Tractor | 6640O | — |
| Tractor | 7740O | — |
| Tractor | 7840O | — |
| Combine | 800 | — |
| Loader | 2450 | — |
| Tractor | 160-90 DT | — |
| Tractor | 5030 | — |
| Backhoe | 580SK | — |
| Tractor | 3930H | — |
| Tractor | F100 DT | — |
| Tractor | F115 DT | — |
| Tractor | F140 DT | — |
| Tractor | F130 DT | — |
| Tractor | 5610 | — |
| Tractor | 7810 | — |
| Tractor | F130 | — |
| Engine | 4390 | — |
| Engine | 6590T | — |
| Engine | 6590 | — |
| Engine | 4390T | — |
| Tractor | 140-90 | — |
| Tractor | 180-90 | — |
| Tractor | 160-90 | — |
| Tractor | F100 | — |
| Tractor | F140 | — |
| Skid Steer | 1845C | — |
| Backhoe | 775 | — |
| Tractor | F115 | — |
| Tractor | 4630N | — |
| Tractor | 4630NO | — |
| Tractor | 3930N | — |
| Tractor | 4130N | — |
| Dozer | 1155E | — |
| Dozer | 1150E | — |
| Dozer | 1550 | — |
| Dozer | 450C | — |
| Dozer | 550E | — |
| Dozer | 855D | — |
| Dozer | 850D | — |
| Backhoe | 35WL | — |
| Backhoe | 35C WL | — |
| Backhoe | 480F LL | — |
| Backhoe | 480F | — |
| Backhoe | 580K | — |
| Tractor | 946V | — |
| Combine | TR86 | — |
| Tractor | 8630 | — |
| Tractor | 876V | — |
| Tractor | 4830O | — |
| Tractor | 4830N | — |
| Tractor | 4830 | — |
| Tractor | 8730 | — |
| Tractor | 976V | — |
| Backhoe | 655C | — |
| Tractor | 8830 | — |
| Tractor | F110 | — |
| Tractor | 846V | — |
| Tractor | F120 DT | — |
| Loader | W11B | — |
| Backhoe | 680CK | — |
| Backhoe | 780D | — |
| Backhoe | 680L | — |
| Loader | FR220 | — |
| Loader | FR160 | — |
| Tractor | 5900 | — |
| Tractor | F110 DT | — |
| Backhoe | 755B | — |
| Tractor | TW25 | — |
| Excavator | 1187C | — |
| Backhoe | 555C | — |
| Tractor | 7710 | — |
| Tractor | 1156V | — |
| Tractor | 276V | — |
| Tractor | 8530 | — |
| Tractor | 6410 | — |
| Tractor | 7610O | — |
| Tractor | F120 | — |
| Engine | 188 | — |
| Dozer | 550 | — |
| Dozer | 650 | — |
| Tractor | 5110 | — |
| Tractor | 6610O | — |
| Tractor | 6810 | — |
| Tractor | 7810O | — |
| Tractor | 7910 | — |
| Tractor | 8210 | — |
| Tractor | 130-90 DT | — |
| Tractor | 130-90 | — |
| Tractor | 115-90 DT | — |
| Tractor | 115-90 | — |
| Tractor | CS13 | — |
| Dozer | 310E | — |
| Dozer | 455C | — |
| Tractor | TW5 | — |
| Tractor | TW35 | — |
| Combine | 2000V | — |
| Tractor | 276VII | — |
| Tractor | 936V | — |
| Tractor | TW15 | — |
| Harvester | 386 | — |
| Harvester | 87 | — |
| Loader | W14B | — |
| Loader | W36 | — |
| Loader | W20C | — |
| Backhoe | 26D | — |
| Backhoe | 480E LL | — |
| Backhoe | 480E | — |
| Backhoe | 580E | — |
| Tractor | 756V | — |
| Harvester | 326 | — |
| Harvester | 375 | — |
| Harvester | 275 | — |
| Cotton Picker | 622 | — |
| Cotton Picker | 616 | — |
| Excavator | 1080B | — |
| Excavator | 1187B | — |
| Forklift | 586C | — |
| Forklift | 585E | — |
| Forklift | 585D | — |
| Forklift | 585C | — |
| Forklift | 584D | — |
| Forklift | 584C | — |
| Forklift | 586E | — |
| Forklift | 586D | — |
| Backhoe | 780C | — |
| Backhoe | 680K | — |
| Skid Steer | 1845 | — |
| Skid Steer | 1700-SERIES | — |
| Skid Steer | 1845S | — |
| Trencher | P60 | — |
| Dozer | FD20 | — |
| Tractor | 856V | — |
| Tractor | 836V | — |
| Dozer | 1455B | — |
| Dozer | 1450B | — |
| Excavator | 880D | — |
| Backhoe | 580SE | — |
| Skid Steer | 1835B | — |
| Harvester | 82-SERIES | — |
| Dozer | 1150D | — |
| Dozer | 1155D | — |
| Excavator | 1080 | — |
| Excavator | 1280B | — |
| Backhoe | 480D | — |
| Backhoe | 480LL | — |
| Trencher | SD100 | — |
| Tractor | 956V | — |
| Combine | 2000VII | — |
| Excavator | 1187 | — |
| Backhoe | 780B | — |
| Skid Steer | 1845B | — |
| Tractor | 6710 | — |
| Combine | 2000VI | — |
| Tractor | 1150V | — |
| Dozer | 1150B | — |
| Dozer | 1150C | — |
| Dozer | 850C | — |
| Dozer | 855C | — |
| Dozer | 850B | — |
| Excavator | 1280 | — |
| Excavator | 880C | — |
| Backhoe | 680H | — |
| Backhoe | 580SD | — |
| Backhoe | 580D | — |
| Dozer | 350B | — |
| Dozer | 450B | — |
| Dozer | 455B | — |
| Dozer | 500 | — |
| Excavator | 50 | — |
| Loader | W11 | — |
| Backhoe | 35 | — |
| Tractor | 234 | — |
| Excavator | 40 | — |
| Skid Steer | 1835 | — |
| Harvester | 295 | — |
| Excavator | 35 | — |
| Excavator | 980B | — |
| Backhoe | 680G | — |
| Backhoe | 780 | — |
| Harvester | 400 | — |
| Harvester | 300 | — |
| Harvester | 56-SERIES | — |
| Engine | D-301 | — |
| Engine | 207 | — |
| Dozer | 1450 | — |
| Dozer | 350 | — |
| Dozer | 450 | — |
| Excavator | 880 | — |
| Excavator | 980 | — |
| Backhoe | 480C | — |
| Backhoe | 580C | — |
| Trencher | DH5 | — |
| Combine | 715 | — |
| Backhoe | 26C | — |
| Backhoe | 480B | — |
| Backhoe | 680E | — |
| Tractor | 420 | — |
| Cotton Picker | 414 | — |
| Cotton Picker | 420 | — |
| Backhoe | 580B | — |
| Harvester | 284 | — |
| Tractor | INTERNATIONAL | — |
| Combine | 615 | — |
| Backhoe | 26S | — |
| Backhoe | 26B | — |
| Backhoe | 26 | — |
| Tractor | 26B | — |
| Harvester | 188 | — |
| Harvester | 186 | — |
| Harvester | 185 | — |
| Harvester | 296 | — |
| Harvester | 58-SERIES | — |
| Harvester | 5 | — |
| Harvester | 66-SERIES | — |
| Harvester | 96 | — |
| Tractor | 656 | — |
| Engine | D-282 | — |
| Backhoe | 320 | — |
| Tractor | 470 | — |
| Tractor | 570 | — |
| Combine | 5 | — |
| Combine | 403 | — |
| Backhoe | 33 | — |
| Tractor | 2656 | — |
| Combine | 960 | — |
| Combine | 660 | — |
| Forklift | 580 | — |
| Backhoe | 23 | — |
| Backhoe | 34 | — |
| Backhoe | 33S | — |
| Backhoe | 480CK | — |
| Backhoe | 580 | — |
| Tractor | 33 | — |
| Tractor | 530 | — |
| Harvester | 600 | — |
| Harvester | 601 | — |
| Harvester | 187 | — |
| Harvester | 90 | — |
| Harvester | 86 | — |
| Tractor | 430 | — |
| Tractor | 930-SERIES | — |
| Combine | 503 | — |
| Dozer | 310G | — |
| Tractor | 2504 | — |
| Tractor | 504 | — |
| Combine | 303 | — |
| Tractor | 2706 | — |
| Tractor | 2606 | — |
| Tractor | 606 | — |
| Tractor | 184 | — |
| Harvester | 184 | — |
| Dozer | 750 | — |
| Backhoe | 32 | — |
| Harvester | 201 | — |
| Dozer | 1000D | — |
| Backhoe | 32S | — |
| Backhoe | 430CK | — |
| Backhoe | 530CK | — |
| Dozer | 310F | — |
| Loader | W5A | — |
| Tractor | 460 | — |
| Tractor | 560 | — |
| Tractor | 660 | — |
| Tractor | 630 | — |
| Tractor | 340 | — |
| Dozer | 800 | — |
| Dozer | 1000C | — |
| Backhoe | 31 | — |
| Dozer | 420C | — |
| Tractor | 425 | — |
| Tractor | 240 | — |
| Tractor | 300B-SERIES | — |
| Tractor | 400B-SERIES | — |
| Tractor | 500B-SERIES | — |
| Tractor | 700 | — |
| Tractor | 600B-SERIES | — |
| Tractor | 900 | — |
| Tractor | 800 | — |
| Backhoe | 320B | — |
| Backhoe | 420BD | — |
| Tractor | 130 | — |
| Tractor | 350 | — |
| Tractor | 330 | — |
| Tractor | 230 | — |
| Tractor | 450-SERIES | — |
| Dozer | 600 | — |
| Backhoe | 420B | — |
| Tractor | 400-SERIES | — |
| Tractor | 600-SERIES | — |
| Tractor | 300-SERIES | — |
| Tractor | VAC11-SERIES | — |
| Tractor | 500-SERIES | — |
| Tractor | VA-SERIES | — |
| Tractor | VAI-SERIES | — |
| Tractor | VAC13-SERIES | — |
| Tractor | VAC12-SERIES | — |
| Tractor | 100 | — |
| Tractor | 200 | — |
| Tractor | 300 | — |
| Tractor | D-SERIES | — |
| Tractor | DO-SERIES | — |
| Tractor | DC-SERIES | — |
| Tractor | DV-SERIES | — |
| Tractor | SUPER A-1 | — |
| Tractor | SUPER AV-1 | — |
| Baler | 66 | — |
| Tractor | SC-SERIES | — |
| Tractor | SUPER A | — |
| Tractor | SUPER M-TA | — |
| Tractor | SUPER M | — |
| Tractor | DH-SERIES | — |
| Tractor | SUPER C | — |
| Tractor | FARMALL H | — |
| Tractor | FARMALL CUB | — |
| Tractor | FARMALL HV | — |
| Tractor | SUPER AV | — |
| Tractor | SUPER-HV | — |
| Tractor | SUPER-H | — |
| Tractor | S-SERIES | — |
| Tractor | LA-SERIES | — |
| Tractor | SO-SERIES | — |
| Tractor | FARMALL MV | — |
| Tractor | FARMALL MDV | — |
| Tractor | FARMALL MD | — |
| Tractor | FARMALL M | — |
| Tractor | FARMALL C | — |
| Tractor | FARMALL BN | — |
| Tractor | FARMALL B | — |
| Tractor | FARMALL AV | — |
| Tractor | FARMALL A | — |
| Tractor | L-SERIES | — |