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6K-8420: 1-1/16-12 Thread Bulk Head Lock Nut

37° Flare Bulkhead Fitting Lock Nut

Brand: Cat

6K-8420: 1-1/16-12 Thread Bulk Head Lock Nut

37° Flare Bulkhead Fitting Lock Nut

Brand: Cat

6K-8420

3J-1907

3K-0360

6K-8420: 1-1/16-12 Thread Bulk Head Lock Nut

3J-1907: 1.98 x 11.89mm 90A NBR O-Ring

3K-0360: 2.21 x 16.36mm 90A NBR O-Ring

7M-8485: 2.95 x 29.74mm 90A NBR O-Ring

3D-2824: 2.95 x 23.47mm 90A NBR O-Ring

6V-8397: 1.78 x 9.27mm 90A NBR O-Ring

Description for part number 6K-8420

Description:
Cat® Tube Connection Accessories are held to the highest standards of quality and reliability. These parts are manufactured to exacting tolerances to ensure leak free connections. Each Cat Tube Connection Accessory is designed to meet or exceed industry standards, where applicable, for operating pressure, assembly torque capability, and corrosion protection to ensure a long life and proper machine functionality.

Attributes:
• Fluid carrying tube connection component
• Designed to meet or exceed the performance of industry standard parts and provide leak free connections
• The image provided is for reference only. The construction of the part may differ slightly from the image depicted, but the part is designed to be interchangeable with the OEM part.

Applications:
Tube connection accessory components are only compatible with other components designed specifically for the same type and size connection. Consult your owner’s manual or contact your local Cat Dealer for more information.

Warning:This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Specifications for part number 6K-8420

Units of Measure

Compatible Models for part number 6K-8420

INTEGRATED TOOLCARRIER

IT12 IT28 IT18 IT28B IT18B

WHEEL SKIDDER

518C 518

ROTARY DRILL

MD6310 MD6540C MD6250 MD6380

HARVESTER HEAD

SAT323 SAT322 SAT322T SAT318 SAT323T SAT323TSC SAT322TSC

UNDERGROUND ARTICULATED TRUCK

AD22

EXCAVATOR

215B 215C 215D 375-A L 225B 225D 385C FS 385C L 219D 229D 231D 385B 385C 235B 235C 235D 245D 245B 390D 390D L 229 225 235 219 215 375-A 245

WHEEL TRACTOR

650B 651B 651E 660B 631D 631E 631C 641B 666B 637 633C 657E 657B 633D 639D 613B 637D 613C 637E

HYDRAULIC CONTROL

163 143 153 141 140

TRACK LOADER

963 973 935C 983 935B 943 953 963B 963C 953B 977K 931B 931C 931C II 935C II

PETROLEUM TRANSMISSION

TH48-E80

SOIL COMPACTOR

825C 815B

PETROLEUM ENGINE

C175-16 3512E 3512C

WHEEL DOZER

854G 844 834B 814B 824C

LANDFILL COMPACTOR

836 826C 816B

GRAPPLE

120C 518 125C

WHEEL LOADER

960F 950B 950E 950F G926 G910 988B 988F G916 966D 966C 966F 966E G936 966R 930R 930T 936E 936F 926E 990 II 988F II 994 990 916 920 926 930 936 950 980F II 950B/950E 992D 980C 992C 980F 992G 994F 994D 994H 950F II

COMPACT WHEEL LOADER

910

SOIL STABILIZER

SS-250

ARTICULATED TRUCK

D44B D20D D35HP D30D D250E II D250E D250D D250B D25D D350E D350D D300E II D550B D300E D300D D300B D400E D400D D400 D40D

WAGON

776

INDUSTRIAL ENGINE

C7.1 3516B 3516C 3512C

WHEEL SCRAPER

651E 666B 631E 657E 657B 637E 637D 639D 666 637 657

QUARRY TRUCK

775D 775B 771D 771C

LOGGER

227

SPRAY AR

CAT WDS

TRACTOR

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

GAS ENGINE

G3520

BULLDOZER

824S 834U 834S 814S 825 9SU 8SU 10SU 11SU 8S 8U 9C 9U 9S 4S 10C 11U 10S 10U 8A 3S 3P 4A

FELLER BUNCHER

FB518

PUMPER

SPF343 SCT673 SPF343C

UNDERGROUND ART TRUCK

AD22 AE40 AE40 II AD45B AD55B AD60 AD55 AD63 AD30 AD45 AD40

LOAD HAUL DUMP

R1600G R1600H R1700G R3000H R1700 II R2900G R1300 R1600 R1700 R2900 R1300G R2900 XE R1300G II

OFF HIGHWAY TRUCK

789G 777G 789D 796 AC 794 AC 777 775 773 798 AC 785D 789 785 798

LOAD, HAUL, DUMP

R1700K

MOTOR GRADER

24 16 18 18M3 16H 16G 14H 14G 12G 24H 16H NA 16M3 14H NA

WINCH

518 57H 53 59 58 59N 59L 58L

BACKHOE

D3 931

HYDRAULIC SHOVEL

6060

TRACK-TYPE TRACTOR

D10 D11 XE D11 D3B D4B D4E D10N D4E SR D11N D11R D11T D7G D8K D8L D10T2 D8N D8H D9L D9N D9H

MARINE ENGINE

3516 C175-16

PIPELAYER

578 583R 589 594H

MINING EXCAVATOR

5230B 5230

FRONT SHOVEL

235C 385C 5080 5090B

MOBILE HYD POWER UNIT

385C

PETROLEUM PACKAGE

TH48-E70 CX35-P800

RIPPER SCARIFIER

140G 130G 12G 16G

GENERATOR SET

DE1400 G3520 G3512 D1500 DE1500 D1250 DE1000S D1000 DE1250S D800 DE1250 C32B 3516C

ENGINE

C32B G3520

LOCOMOTIVE ENGINE

3516 3516C 3516B

ELECTRIC ROPE SHOVEL

7495 HF 7495

ROAD RECLAIMER

RR-250

GEN SET ENGINE

DE1100 G3520 DE800S

ENGINE - MACHINE

C4.4

RIPPER

953B 963 953 951 943 3 4 9 8 11 10

BOOM

120C

TRUCK

794 AC 775D 789C 789D 777C 777B 789B 777D 777G 769B 769D 769C 785 789 793D 793C 69D 773D 785C 785D 773B 785B MT4400D AC 769 773 777

Related parts

238-5082: 2.95 x 23.47mm 90A FKM O-Ring

Cat® Rubber O-Ring Seal for 1 1/16-12" STOR Connector End

3D-2824: 2.95 x 23.47mm 90A NBR O-Ring

Discover Cat's precision-engineered nitrile O-ring. From gaskets to heavy-duty seals, ensure optimal performance with reliable parts.

6V-5063: 2.95 x 23.47mm 70A EPDM O-Ring

Cat® O-Ring Seal for 1/16-12" STOR Connector End

238-5082: 2.95 x 23.47mm 90A FKM O-Ring

3D-2824: 2.95 x 23.47mm 90A NBR O-Ring

6V-5063: 2.95 x 23.47mm 70A EPDM O-Ring

Key

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

To find the parts that fit.

To find the parts that fit.

To find the parts that fit.

To find the parts that fit.

6K-8420: 1-1/16-12 Thread Bulk Head Lock Nut

6K-8420: 1-1/16-12 Thread Bulk Head Lock Nut

6K-8420

3J-1907

3K-0360

This part:

This part:

This part:

This part:

This part:

This part:

Description for part number 6K-8420

Specifications for part number 6K-8420

Thickness (in):

0.409

Nut Type:

Hex

Thread Size (in - TPI) (in):

1/1-12

Hand of Thread:

RH

Material:

Carbon Steel

Thread Size (in):

0.042

Material Description:

Plated Steel

Drive (in):

1.375

Compatible Models for part number 6K-8420

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Description for part number 6K-8420

Specifications for part number 6K-8420

Thickness (in):

0.409

Nut Type:

Hex

Thread Size (in - TPI) (in):

1/1-12

Hand of Thread:

RH

Material:

Carbon Steel

Thread Size (in):

0.042

Material Description:

Plated Steel

Drive (in):

1.375

Compatible Models for part number 6K-8420

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.More Info

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.More Info

Add Equipment to Find Your Parts

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.More Info

Add Equipment to Find Your Parts

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.More Info

Parts diagram for 6K-8420

View Detailed Parts Diagrams

6K-8420

3J-1907

3K-0360

This part:

This part:

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.

Machines can have multiple ID plates and serial numbers. The machine serial number is typically called a Product Identification Number, or PIN, and is located on the outer frame of the machine.