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HomeHardware, Seals, & ConsumablesHardwareFastenersBolts & Screws034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt
HomeHardware, Seals, & ConsumablesHardwareFastenersBolts & Screws034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt
034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt

Cat® Self Locking Bolt is a fastener with a locking mechanism that prevents the bolt from loosening due to vibrations or external forces

Brand: Cat

Product Images
034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt
034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt
034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt
034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt
034-3557: 3/8''-16 x 1 1/8'' Hex Head Lock Bolt

Cat® Self Locking Bolt is a fastener with a locking mechanism that prevents the bolt from loosening due to vibrations or external forces

Brand: Cat

Warranty Information
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DiagramDescriptionSpecificationsCompatible Models
Specifications for part number 034-3557

Units of Measure

USMetric
Bolt Length (in): 1.125
Bolt Length (mm): 28.58
Bolt Type: Hex Head
Coating: Zinc
Grip Length (in): 0.157
Grip Length (mm): 4.0
Material: STEEL,Alloy Zinc,Alloy Mixed: Metal,Nylon, 6, 6/12, 6/6 Plastic,Carbon Steel
Hand of Thread: RH
Thread Size (in): 0.015
Hex Size (in): 0.56
Class or Grade: Sae J429 Grade 8 (150 Ksi)
Thread Size (mm): 0.375
Locking Feature: Nylon Patch
Hex Size (mm): 14.29
Thread Size (dia x pitch) (mm): 3/8x16
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Compatible Models for part number 034-3557

GENERATOR

SR4B SR4

TRUCK ENGINE

1673C 3306B 3306

WHEEL TRACTOR-SCRAPER

627 623 621 627K LRC 623K LRC 623K 621K 627K 613G 657 651

TRACK SKIDDER

D5HTSK II 527 517 D4HTSK III

WHEEL SKIDDER

518C 528B 525 528 545 530B

ROTARY DRILL

MD6200

WATER FORDING TRACTOR

D7R II

EXCAVATOR

330 L 330B LN 330-A L 330 LN 330-A L 235B 235C 235D 330B 330B L 330-A 330-A LN

WHEEL TRACTOR

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

HYDRAULIC CONTROL

48 163 143 153 141 140

TRACK LOADER

963 973 939 943 953 973C 977L 955L 983B

SOIL COMPACTOR

825H 825G 825C 815B 815F 825G II

PETROLEUM TRANSMISSION

TH48-E80

PETROLEUM ENGINE

3516 3512C

WHEEL DOZER

854G 854K 844H 844K 844 834G 834H 834B 854 814B 824H 824G 824C 814F 824G II

LANDFILL COMPACTOR

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

PETROLEUM GEN SET

3512B G3306B

WHEEL LOADER

972G 988 XE 950B 950E 988B 988G 988H 988F 966D 966C 966F 966E 966G 966R 936E 936F 990 II 988F II 990 992 920 980G II 988K XE 930 936 980F II 966F II 980K HLG 950B/950E 990K 990H 992D 980C 992C 980F 980H 980G 992G 980K 992K 970F

ARTICULATED TRUCK

D44B D35HP D30C D30D D250E II D35C D250E D25D D25C D350E D350D D350C D300E II D550B D300E D300D D400E D400D D400 D40D

WHEELED EXCAVATOR

W330B

ENGINE - INDUSTRIAL

3512B

INDUSTRIAL ENGINE

C7.1 3304 3306 3516B 3512B 3306B C9.3B D333C 3412C D330C

QUARRY TRUCK

771D

WHEEL SCRAPER

651E 621E 633E 657G 633D 621B 657E 637E 637G 637D 627G 627F 639D 627B 627E 615C 611

TRACTOR

784C 784B 776D

GAS ENGINE

G342C G3304 G3306 G3306B G3612 G3616 G3608

BULLDOZER

824S 834U 834S 825 8SU D5C PAT 7SU 11SU 7S LGP 8U 5A D5C PATLGP 5P 5S 6A 6S 11U 7A 7S 7U 8A 5A PAT

PUMPER

SPF343C SPS342

UNDERGROUND ART TRUCK

AE40 AE40 II AD45B AD55B AD60 AD55 AD63 AD30 AD45 AD40

POWER MODULE

XQC1200 3516C TR43 PM3516 TR43-C18L XQG135 TR43-E44

LOAD HAUL DUMP

R1600G R1600H R1700 II R2900G R1300 R1600 R2900 R1300G R2900 XE

OFF HIGHWAY TRUCK

789G 789D 789

OEM SOLUTIONS

3412C

WINCH

57H 53 57 55

MOTOR GRADER

120H 120K 120 GC 135H 163H 140K 140H 140G 130G 140K 2 143H 135H NA 163H NA 120H NA 140H ES 160H ES 12H NA 120H ES 160 16H 16G 140H NA 140 14G 12H 12G 24H 24M 12K 120 160K 160H 16H NA 160H NA 12H ES 14H NA 120K 2

TRACK-TYPE TRACTOR

D6D SR D6G2 LGP D11 D8 GC D4H III D3C III D7R SERIES D5B D5C D5H D5E D6E SR D6D D6R D6T D6E D8 D7 D10R D11N D11R D11T D7R XR D6T LGP D7R LGP D6T LGPPAT D4C III D6T XW D5H XL D6T XL D5C III D8GC D7G2 D7R D7G D7H D8T D8R D8N D8R II D6T XL PAT D6T XW PAT D6G2 XL D4H XL D7R II

MARINE ENGINE

3304 3306 3516C 3512C C280-16 C280-12 3306B 3512B D333C 3304B C280-6 C280-8

PIPELAYER

572R II 587T 587R 578 572R PL83 PL87 PL72 583T 583R

FRONT SHOVEL

235C

ENGINE - GENERATOR SET

3508B

VIBRATORY COMPACTOR

CB-534

PETROLEUM PACKAGE

TH48-E70

RIPPER SCARIFIER

16G

GENERATOR SET

3304B G3306 3516C GEN G3516B 3508B 3516B GEN 3306B 3512C 3512B G3306B 3516C 3516B 3516E

MARINE TRANSMISSION

7251 7261

LOCOMOTIVE ENGINE

3612

COLD PLANER

PM-565B PM-465 PM-201

ENGINE - MACHINE

3306 C4.4

GEN SET ENGINE

3608 3606 3516B 3304B 3306B 3306 3304 3616

CHALLENGER

65 75 65C 65B 65D 75D 75C 85C 85D 70C

RIPPER

977 953 951 955 943 3 7 6 5 4 8 11

MARINE GEAR

3192 7251

TRUCK

775E 789D 789B 777D 769D 785 789 773E 773D 785C 785B

POWERTRAIN

TR43E44-C13BL TR43M44-C13B

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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