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HomeGround Engaging ToolsGround Engaging Tool Hardware & RetentionGround Engaging Tool Washers4B-4280: 2.5mm Thick Washer
HomeGround Engaging ToolsGround Engaging Tool Hardware & RetentionGround Engaging Tool Washers4B-4280: 2.5mm Thick Washer
4B-4280: 2.5mm Thick Washer

Cat® A Washer designed for a fastener prevents the fastener from sinking into the material and distributes the load more evenly.

Brand: Cat

Product Images
4B-4280: 2.5mm Thick Washer
4B-4280: 2.5mm Thick Washer
4B-4280: 2.5mm Thick Washer
4B-4280: 2.5mm Thick Washer
4B-4280: 2.5mm Thick Washer

Cat® A Washer designed for a fastener prevents the fastener from sinking into the material and distributes the load more evenly.

Brand: Cat

Warranty Information
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DiagramDescriptionSpecificationsCompatible Models
Specifications for part number 4B-4280

Units of Measure

USMetric
Washer Type: Flat
Fits Bolt Sizes (in): 1/2
Fits Bolt Sizes (mm): M12
Material: SOFT STEEL,Alloy Zinc,Alloy Mixed: Metal,Carbon Steel
Outer Diameter (in): 1.063
Outer Diameter (mm): 27.0
Thickness (in): 0.098
Thickness (mm): 2.5
Thickness - 3 (mm): 2.5
Inside Diameter (mm): 13.5
Coating: Zinc
Inside Diameter (in): 0.531
Outside Diameter (in): 1.063
Outside Diameter (mm): 27.0
Outside Diameter (OD) - 2 (mm): 27.0
Inside Diameter (ID) - 1 (mm): 13.5
Finish: Brass
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Compatible Models for part number 4B-4280

GENERATOR

SR4

TRUCK ENGINE

1673C 3306B 3306 1140 1150 1145 1160 3408B 3406B 1676 1693 3408 3406 3208

INTEGRATED TOOLCARRIER

IT12 IT28 IT18 IT12B IT14F IT14B IT28B IT18B

WHEEL TRACTOR-SCRAPER

627 637 637K 627K LRC 627K

TRACK SKIDDER

D4HTSK II D5HTSK II

WHEEL SKIDDER

535B 528B 525B 525 518 515 528 530B 508

MINI HYD EXCAVATOR

307.5 304SR 303 SR 307E2 308.5 303CR 308 309 306 307 306.5 310 302.7CR

EXCAVATOR

330 L 215B 215C 215D 375-A L E300B 213B 219D EL300 330 LN 350 L 330-A L 231D E240 235B 235C 235D E300 350-A 330-A 330-A LN EL300B 225B 225D 330B LN 330-A L 350-A L 229D EL240 E180 245D 245B EL180 330B L 229 225 235 219 215 375-A 245

MULTI TERRAIN LOADER

287D 277D 257D3 257D

COMPACT TRACK LOADER

279D3 279D 259D 289D 289D3 259D3

WHEEL TRACTOR

660B 641B 666B 623B 623E 623F 621B 621R 621E 621F 621G 621S 627B 627G 627H 627E 627F 650B 633E II 651B 651E 615C II 631D 631E 631C 631G 613C II 615 613 611 627 621 623 637 641 651 657 666 633C 657E 657B 633D 639D 615C 637G 613B 637D 613C 637E 637K

ROTARY MIXER

RM500B

HYDRAULIC CONTROL

193B 128 129 192 193 191 183 184 181 182 165 172 173 163 161 143 183B 153 150 151 141 140 50 48 46 44 173B

VEHICULAR ENGINE

3516 3512 D346 D348 D349

TRACK LOADER

933C 935B 939C 951C 951B 977D 977H 977K 977L 955C 931B 955H 931C 955K 955L 983B 963 973 983 939 933 931 943 941 953 941B

SOIL COMPACTOR

825 CP68B 815 CS76B CS74B 815K 815B 815F CS20 CS11 CS12 CS13 CS14 CS16 CS17 CS19 CS56B CS78B CS54B CP56B CS64B CP74B 825H 825G 825K 825C 825B 815F II CP11 CP12 CP14 CP16 CP17 CS68B CS66B 825G II

PETROLEUM ENGINE

3508C C9 C7 3126B 3516C 3512C

BACKHOE LOADER

420F2 430F 450F 420XE 427F2 438C 438D 438B 416F2 415 416 426 428 436C 424 420 436B 434F 432F 434 430 432 444 440 450 416F 416B 434F2 432F2 430F2 442D 426B 426C 428F2 446B 422F 444F 415F2 420F 444F2 426 F2 422F2 428F 428B

WHEEL DOZER

834B 814B 814K 814F 834 824B 824H 824G 824C 824K 814F II 814 824 824G II

LANDFILL COMPACTOR

836 826 826G II 816F II 816 826C 826B 826G 826H 826K 816K 816B 816F

GRAPPLE

518 120C 125C

PETROLEUM GEN SET

G3306B

TELEHANDLER

TH103 TH62 TH63 TH82 TH83 TH1055 TH1255 TH0642 TH0842

WHEEL LOADER

962H 962G 986H 986K 962K G926 988B 988F G916 966D 966C 966F 966E G936 966H 966G 966R 814K 926E 988F II 986 980 950G II 988 994 990 992 916 920 980G II 926 930 936 950 950B/950E 992D 992B 992C 970F 966G II 972G 972H 988GC 950B 950E 950G 950H 950K 930R 930T 936E 936F 962G II 972G II 980B 980C 980F 980H 980G

COMPACT WHEEL LOADER

920K 914 910 902C2 920 903D 910F 910E 910K 910M 901C2 903C2 914K 914M 918M

SOIL STABILIZER

SS-250

ARTICULATED TRUCK

D35HP D30C D30D D35C D250D D250B D550B D400E D400D D44B D20D D25D D25C D350E D350D D350C D300D D300B D400 D40D

WAGON

776 772

ENGINE - INDUSTRIAL

3406B 3516B

PNEUMATIC COMPACTOR

PS-500

INDUSTRIAL ENGINE

3126 3126B 3116 3114 3304 3306 3512 3516 C-10 3508 C7 C9 3306B D320A 3304B 3054 3056 D342C 3204 3176C 3176B 3412 3406 D398 D399 D379 3406C D342 D343 D348 D349 D346 D398B 3408B D333C 3196 D353C D353E D353D C-9 3160 D330C D379B

ASPHALT SCREED

SE60 FM 8 FT SE47 FM SE60

QUARRY TRUCK

777E 775B 773E 771C 772G 770G

WHEEL SCRAPER

641B 666B 621E 621G 621F 621B 623B 623E 627G 627F 627B 627E 651E 651B 630B 630A 631G 631D 631C 631E 631B 657G 633B 633D 657E 657B 637K 637E 637G 637B 613B 637D 639D 621 627 633 613 666 637 641 657 651

WINDROW ELEVATOR

WE-851B

LOGGER

227

TRACTOR

784C 768C 768B 772B 772 776 776C 776B

GAS ENGINE

G333C G379A G3304 G3306 G3412 G3408B G3408 G3406 G398 G399 G342C G343 G379 G3306B G3304B G3508B G353D G3512 G3516 G3508

BULLDOZER

834U 834S 6 814S 8SU 955 10SU 6SU 3S LGP 10C 11U 10S 10U 977A 824S 826B 824C 825 824 815 9SU 834 7SU 11SU 7S LGP 8S 8U 8R 9A 9C 9U 9S 9R 4S 4P 5A 5P 5S 6A 6S 7A 7S 7U 8A 3S 3P 4A

FELLER BUNCHER

FB518

UNDERGROUND ART TRUCK

AE40 AE40 II AD45B AD60 AD55 AD63 AD30 AD45 AD40 AD55B

POWER MODULE

XQG135

FELLING HEAD

SS-56 SH-56B SC-57

LOAD HAUL DUMP

R2900 R1700G R3000H R2900G

OFF HIGHWAY TRUCK

777G 796 AC 798 AC 785D 789G 789D 772 770 793D 777 775 773 789

WINCH

53 57 56 55 54 59 58 528 518 54H 57H 56H 59N 59L 58L

MOTOR GRADER

130G 24M 160G 160M 120H 120G 120B 16 120M 140B 140M 140G 16M 16G 14M 140 14G 14E 12G 12M 120 12F 12E

BACKHOE

D4 D3 931

TRACK-TYPE TRACTOR

D6G2 LGP D10 D3C III D3G D3B D3C D4B D4G D4H D4D D4E D5B D5M D5N D5H D5E D5G D6E SR D6C D6D D6R D6M D6N D6E D6G D6H D6G SR D4E SR D4C III D5C III D7R D7F D7G D7H D8R D8K D8L D8N D8H D9E D9G D9R D9L D9N D9H D6G2 XL D6D SR D6H II D6F SR D3 D5 D10N D10R D11N D6H XL D6H XR D5H XL D7G2

ASPHALT PAVER

AP1055 AP655 AP300F AP600 AP500F AP655F SE47 AP-1000F AP355F AP-800 AP-800B AP555F AP655F L AP600F AP355 AP-1055F AP300 AP-1200 AP1000

MARINE ENGINE

3116 3304 3306 D353E 3516 3512 D353C D353D 3508 D379A D379B D330A D330B D330C D397D 3408B D375D 3406B D398A D398B 3516B D337F 3512B D333A D333B D333C 3208 3412 3408 3406 D399 D342C 3508B D364 D349 D346 D348 D342 D343 D334 D337 D336 D315 D326F 3306B 3304B

MARINE AUXILIARY

3512 3508 3516C 3516B 3512B 3508B

PIPELAYER

578 561N 561M 561B 561D 561C 583R 583K 583H 572R 572F 572G 571G 571F 589 594H 594

MINING EXCAVATOR

5130

FRONT SHOVEL

235C 5080

VIBRATORY COMPACTOR

CS-68B CS-433B CS-66B CS-653 CS-64B CS-643 CB-614 CS12 CS14 CS78B CS54B CS56B CB-434 CS79B CP-68B CP-643 CP-653 CS74B CP68B CS-573 CS-56B CS-583 CS-553 CS-551 CS-54B CS-78B CS-563 CS-79B CP-433B CP12 CS-76B CP74B CS-74B CB-534 CP-563 CP-553 CP-54B CS68B CB-314 CP-56B CP54B CP-74B CP76B CP56B

RIPPER SCARIFIER

140G 12G 16G 130G

GENERATOR SET

G3516 G3512 G3508 3508 G3306 3516 3512 G3516B 3508C 3508B C9 3306B 3512C 3512B 3516B

RECLAIMER MIXER

RM500B

MARINE TRANSMISSION

7211 7231 7221 7241 7271 7261

LOCOMOTIVE ENGINE

3516 3512 3516B 3512B 3508 3508B

COLD PLANER

PM820 PM825 PM822 PM620 PM622 PR-750B PM312 PM313 PM310 PR-1000 PR-450C PR-1000C PR-450

FOREST PRODUCTS

FB221

ELECTRIC ROPE SHOVEL

7495 HF 7495

ROAD RECLAIMER

RM500B RM500 RR-250

ENGINE - MACHINE

3304 3408 3204 3208

CHALLENGER

65 65B

GEN SET ENGINE

3406B 3408B 3408C 3516B 3512B 3412 3208 3412C D399 3406 3408 D398B 3304B 3306B G3516 G3512 3508B 3145 3160 3150 3306 3304 D379B 3508 3512 3516

RIPPER

977 963 953 951 955 943 9D 8D 8B 11 10 3 7 6 5 4 9 8

SKID STEER LOADER

289D3 236D 242D3 246D3 279D3 236D3 262D 262D3 242D 246D

BOOM

120C

MARINE GEAR

3192 7251

INDUSTRIAL LOADER

415F2 IL

CABLE CONTROL

619 29 30 118 117 129 127 128

WHEEL FELLER BUNCHER

573C 553C 2570C 563C 2470C 573 2670C

TRUCK

773G LRC 793F XQ 775G 793F OEM 777C 777B 777G 775G OEM 785 789 793 797 793D 793B 793C 793F 772G 773E 773D 773G 797F 797B 773B 769 773 777 775G LRC 794 AC 793F CMD 789C 789D 769B 769C 69D 773G OEM 785C 785D 793F AC

COMPACTOR

CCS9

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KeyKey
Factory Fit

This part is designed to fit your Cat equipment based on the manufacturer’s specifications.

Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.

Remanufactured

Non-Returnable

Kit

Replaced

Remanufactured

Non-Returnable

Kit

Replaced