8T-4131: Hex Head Nut
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    8T-4131: Hex Head Nut

    Part Number: 8T-4131
    Brand: Cat
    Retrieving Price.....
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    Hex Head Nut

    Cat® fastener parts are designed for specific applications based on size, strength, clamp load, and past performance. This is information other manufacturers do not have. They are selected to last until rebuild or the life of the machine. While it may seem as though non-Cat hardware and fasteners are suitable for your machine, no other company knows your equipment like we do.

    *Cat Fasteners are manufactured to precise specifications and are built for durability, reliability, productivity
    *Strength & Quality – Fasteners meet or exceed ISO, ASTM, ASME & SAE requirements.
    *Cat bolts, nuts, and washers are designed to work together as a system for maximum clamping force.
    *Coatings that meet special requirements for different applications (RoHS compliant).

    Cat bolts and the matching hardened washers and nuts form a performance based system which produces consistently high clamp loads. You can trust Cat Fasteners to help you build it, maintain it, or fix it - for most machine and workshop applications throughout the world.

    Warning: This product can expose you to chemicals includingLead 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.
    • US
    • Metric
    • Coating: Zinc-Flake (720 h Salt Spray)
    • Finish: Zinc Flake
    • Finish Notes: Caterpillar is changing from Zinc Plating to a Zinc Flake finish for many hex nuts. Until stock of the current plating is depleted, you may receive either Zinc Plating or Zinc Flake due to the exhaust process.
    • Hardened: Yes
    • Hole Thread Pitch: 2.50
    • Material Description: ISO Class 12 or SAE Grade 8 equivilent
    • Nut Type: Hex Head Nuts
    • Thread: Coarse Thread UNC
    engineer support tractor
    C18 DEUCE 30/30

    55 35 45

    wheel-type loader
    950M 980G 924K 950G II 966K 938F 906K 907M 980G II 972M XE 966H 962G 980K 993K 902C 962H 986K 914K 938H 906H2 910E 938G 930G 980M 962L 930K 928H 924G 972M 928G 950 GC 906H 962 908H2 924F 928F 918F 962G II 982M 906M 924H 988H 962M 950G 903C2 926M 938K 994 950M Z 966F 950H 924GZ 972H 908 988G 908H 914G 966M XE 972G 907H 966M 966E 988K XE 908K 908M 972K 924HZ 930H 986H 903C 914M 938M 910F 914G2 980H 950L 902C2 988K 962K 910G 918M 966F II 910M 950F II 928HZ 962M Z 938G II 910K 966D 960F 966G 907H2 906 902 970F 936F 966L 903D 980L 972L 901C 950K 920K 907K 966K XE 994D 930M 994F 901C2 994H

    engine - generator set
    C4.4 G3412C C27 G3412 3412C 3406C C15 3516 3512 3516C 3512B C32 G3516H 3516B G3520 3516E G3512 3456 3412 C18 C175-16 G3516 3508B C9.3 C9 C15 I6 C9 GEN SET 3508 G3516B C3.3 C18 I6 C13GENSET C175-20 XQ230 G3520H 3512C XQ425 PMG3516 C13 C13 XQ375 G3516C

    wheel-type skidder
    545 555D 535B 545C 535D 535C 525D 525C 545D 525B

    off-highway truck
    793F CMD 793F 775G LRC 773E 773G OEM 770G 793B 772G 785G 789D 793F OEM 772 793C 797F 777G 793F AC 795F AC 794 AC 773G LRC 773GC 797 795F XQ 775G OEM 797B 772G OEM 777D 785D 775G MT4400D AC 777E 773G 770 793F XQ 785C 770G OEM 793D

    engine - machine

    engine - industrial
    C32 C27 3516B C175-20 C4.4 C13

    track-type loader
    963C 963D 973 973D 963K 953K 973C 939C 963 953D 963B

    articulated dump truck
    730 740C 725 745 730C2 EJ 730C 725C 735 740B 725C2 735B 740 GC 745C 735 OEM D300E II 740 D400E II 735C D250E II 730C2 D350E II

    TL943D TH406C TH407C RT80 TH580B TH414C TH82 TH83 TH337C TH417D TH350B TH417C TH63 TH103 TH336C TL1255D TH340B TL642D TH62 TH560B TH314D TH514C TH355B TH220B TH215 TH460B RT100 TH360B TH210 TH330B

    mini hydraulic excavator
    307D 301.8 301.7D 308E2 301.7D CR 308E2 CR 301.5 302.7D 307E2 307C 307-A 308C 307B 302.2D 308E2CR 302CR 308E2SR 307E 303.5E2 304E2 308 308D 301.6C 301.8C 302.4D 304.5E2 308E2 SR 301.6 308E SR 310 301.7CR 305.5 305E2 308E 306 303E CR 308E CR 305.5E2

    road reclaimer
    RM-350B RM500B RM-500 RM-300

    motor grader
    140M 3 120 120M 140M 160M 12M 3 12M 3 AWD 140 160M 3 160K 143H 14L 14M 120K 2 12M 140K 2 140M 2 24 24M 12M 2 120K 120M 2 140M 3 AWD 160M 3 AWD 12K 163H NA 140 GC 140K 24H 120L 160M 2

    material handler
    M325D L MH M325D MH

    wheeled excavator
    M318 M312 M320 M320F M318C W345B II M316C M313C M316D M315D2 M315C M320D2 M316F M318C MH M330D W330B M323F M315D W345C MH M313D M322C M318D M325C MH M318D MH M322D M322D MH M318F M325B M315

    paving compactor
    CD-44B CB-334D CS-56B CP-54B CS-64B CS74B CS-573D CB-44B CS-433E CS-64 CB-534D CS-531D CS44B CS68B CB-335E CB-64 CB-564D CS-563E CP-663E CP-323C CS-573E CS-663E CP-563C CP44B CS-323C CC-34B CB2.5 CS54B CS-431C CP-74B CS-583C CB-434C CP-68B CS-531C CS-74 CS-563 CB-334E XW CB-525B CS-533E CS-76B PS-360B CS-74B CW34 CP-74 CP56B CP-433C CS12 CP-533C CC2.6 CP-44B CD-54B CB-34B CS-583E CB10 CB-34B XW CB-335D PS-300B CS-79B CS-78B CS-68B CW12 CS-34 CP-54 CB-534C CB8 CB-36B CS64B PS-300C CP74B CW-34 CB-523 CS79B CB-521 PF-300B CP-56 CS-54B CP-44 CB7 CP-533D CP-76 CB-434 CS56B CB-54B CC-34 CS-433C CB-334E CS-423E CB-524 CS11 CB-54 CS-533C CB-634D CP-433E PS-150B CS-573C CS-563C CS-66B CB-534B CS-56 CP54B CP-533E CS-76 CB-34 CS78B PF-300C PS-200B CS-563D CP68B CP-56B CS-533D CB-434B CP-34 CB-14B CCS7 CB-525 CB-534 CP-573E CS-583D CP-563E CS10 CS-683E CB2.7 CB-522 CP-563D PF-290B CB-634C CD10 CD-54 CP-64 CS-44B CCS9 CS-44 CP76B CB2.9 CP-563 CB-523B CS-54 CB-634 CB-434D CB-34 XW CB-535B

    underground articulated truck
    AD55 AD22 AD30 AD45B AD55B AD60

    320D2 326D2 330C FM 329D L 329D2 L 320C 325C 349D 320D 325 L 316E L 320D L 322C FM 330 L 330C L 320E 345B II 350-A 320D3 320D LRR 375-A 325-A L 330D2 L 330D L 320D2 L 312F GC 328D LCR 325D MH 330-A 336D L 314E LCR 340D L 312B 320D FM 330D2 538 345C L 336D2 L 323F L 323D L 325C L 345D 350-A L 320-A L 312E 322B L 324D L 350 L 322C 318C 336F 313D2 365B 345C 325-A 340F 385C 313F LGC 311-A 330F OEM 323D S 336FMHPU 325C FM 329E L 345C MH 365C 330-A L 312C 322B LN 312D 336E 312E L 329E 323D2 L 320C FM M325D MH 345B L M318F 330 GC 325D 320B L 336 GC 320D FM RR 365B II 326D2 L 330 324D LN 365C L MH 336D 336F L XE 320E L 320B 329F L 325B L 320F L 320 L 5090B 349F L 336E LH 325D L 324D 349D2 L M325D L MH 323F 558 345D L VG 325D FM 324D FM 323D2 336F LNXE 330F 336D LN 330-A LN 326F L 345B 345D L 336F L 321D LCR 323E LN 5230 319C 325-A LN 323D LN 312D2 385B 320E LN 385C FS 320D2 FM 330B L 320-A N 329E LN 312D2 L 329D 312D2 GC 5130B 336D2 XE 390D L 330C 320D LN 312F 336D2 LXE 330D LN 321C 349 365B L 330D FM 320D RR 320-A 315B L 336 336F LN XE 312D L 322 L 324E 330D 340D2 L 325F LCR 349D L 320N 320B LL 323F SA 568 FM 313D 349D2 313D2 LGP 324E LN 315-A 320D2 GC 320D GC 5080 336E LNH 311D LRR 330D MH 325B 314D LCR 324E L 323E SA 312-A 320B FM LL 320E LRR 323D3 311B 325 LN 352F 323F OEM 336E HVG 340 385C L 330C MH 322-A L 320B N 326D L 336F LN 390D 5110B 314D CR 311F LRR 330 LN 349F 349E L HVG 330C LN 329D LN 329D2 340F L LRE 326F LN 345 GC 385C L MH 340F L UHD 320E RR M315F 335F 323E L 330B 325-A FM L 330B LN 307 365C L 330F LN 352 307-A 330-A L 349F LXE 312B L 320-A S 314C 325D FM LL 330FMHPU 314F CR 568 FM LL 320C L 336E H 336D2 L XE 335F LCR 312C L 375-A L 336F XE 315F LCR 325B LN 324D FM LL 315B FM L 330F L 323F LN 345B II MH 323D SA 311C 314E CR 323D 336D2 313D2 GC 320B S M317F 5130

    MD6310 MD6200 MD6250

    wheel tractor-scraper
    621K OEM TS185 631K 621H TS180 637K 623K 613G TS225 621K 627K LRC 627H 627K TS220 623H 623K LRC

    earthmoving compactor
    836G 826K 825G II 836K 826G II 836H 825K 826G 836 826H 825G 825H

    SR5 WEG SR4B SR500

    petroleum products
    TH31-E61 TH35-C11I C175-16 TH31-C9T TH48-E70 CX31-P600 C15 C18 TH35-E81 CX35-P800 CX31-C13I TH35-C15T TH35-C13I CX35-C18I C32 TH31-C9I TH35-C13T C27 TH35-C15I

    work tool
    VHC-40 VHP-50 GSH22 160 MP15 GSH22-15 S2090 MP20 GSH9B G125 S3090 VT50 CR3 H45 H65DS MP30 VPC-30 70 H55DS S325 CVP16 B8 CVP75 G112 P16 SW460B S115 GSH20 H95E S GSH20B B6 H115GC P225 SW360B S465 VHS-10 H195 S30 GSH15 VT40 VHP-30 MP318 H180S VHS-70 H140S H35DS MP345 VHS-60 H35E S P335 H100 H45DS S3070 S2070 H63 VHS-40 H80E S2050 CVP40 130 H65E S PC6 B35 H90CS GSH9 S3050 PIN GRAB S320 H140GC H55E S VT30 140 SW45 GSH22-10 S365 VHC-50 VPG-55 MP332 CR50 S30350 H63S SG16 S340 VPC-60 VPC-50 P25 100 GSH15-60 120 H100S P115 CR35 PC9 H120S S128 VT60 H70 VHS-30 P315 70S G140 H115S H130S S390 P325 CR20 S25 P215 H120GC S440 G115 B4 SNOW WING 115 63 H50S H70S VHP-40 GSH15B SW345B VHS-50 VPG-45 CVP110 H75E S GSH15-80 H120CS P28 SG18 P140 S80 P130 H160S PC404 H45S S305 H130GC P235 S490 P360 VPG-35 H90C P120 H45E S CR28 MP324 MP40 S130 B30 S50 H50 VPC-40 VHC-30 P40 VPS-45 S40 VPS-35 MP365 S3 B20 H115 GC SW60 A13

    cold planer
    PM-565B PM820 PM622 PM825 PM620 PM822 PM312 PM-565 PM310 PM313 PM-201 PM-465

    forest products
    574 TK751 1390 2670C 550B 584HD 554 573C 586C 580B 2570C 558 580 532 TK752 564 HF222 511 1290T 570 584 2864C 2570D TK741 322C 522B 1190T 573D 548 541 2470C 574B 345C 563C 552 521B 560B 1090 1190 2590 541 2 TK722 552 2 TK721 522 551 521 550 TK732 553C 570B 2491 2391 2290 2390 TK1051 HF221 2670D TK711 563D

    track-type skidder
    527 517

    backhoe loader
    438C 444F 416 436C 430D 446B 446 416B 424D 434F 432F 426C 420F 416E 420F2 420D 428D 430F2 416C 428C 416F2 426B 442D 438D 436B 428F2 420E 416D 434E 422F 444F2 440 432D 416F 438 428 428B 436 430E 422E 426 428F 450E 427F2 432F2 430F 438B 415F2 426 F2 414E 434F2 424B2 428E 444E 432E 424B 446D 442E 450F 415F2 IL 422F2 450 424B HD

    skid steer loader
    272D XHP 299D XHP 297D XHP 297D

    wheel dozer
    834K 834H 834G 824K

    asphalt paver
    AP-600D AP500F AP355F AP-1055E AP-655C AP655F AP-1055F BG-260D AP-1000E BG1055E AP-1055B BG500E AP600F SE60 V XW BG1000E AP-1055D AS2302C AP-1000D AP-655D BG600D AP-500E BG-2455D AP300F BG-2455C SE60 VT XW BG655D AS3301C BG555E AS2252C AP555F AS3251C AP-1000F BG-2255C SE50 VT AP-555E SE60VT XW AP655F L

    integrated toolcarrier
    IT38G IT18F IT62H IT28F IT14G IT24F IT14G2 IT28G IT12B IT14B IT38F IT38H IT62G IT62G II IT14F

    PL87 PL61 PL83 561N 583T PL72 561M

    marine products
    C18 3054 C7.1 C32 3408C 3516C 3056 3412C

    expanded mining products
    MD6420B MD6290 6015B MD6420C MD6420 MD6240 6020B

    track-type tractor

    load, haul, dump
    R1600G R1700K R1700G R1600H

    oem solutions