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LOCKNUT-SPECIAL 1261971 - Caterpillar


1261971 LOCKNUT-SPECIAL Caterpillar parts 345B II, 345B L, 345C, 345C L, 345D, 345D L, 345D L VG, 349D, 349D L, 349E, 349E L, 349E L VG, 349F L, 365B, 365B II, 365C, 365C L, 365C L MH, 374D L, 374F L, 385C L MH
Rating:
26
Alternative (cross code) number:
CA1261971
126-1971
1261971
Caterpillar 1261971 LOCKNUT-SPECIAL
Weight: 13 pounds 5 kg.
Information:
COATING/PLATING  Phosphate and Oil Coating 
HEX LENGTH  145  mm
HEIGHT  88  mm
MATERIAL  Steel - Carbon 
SERRATED FACE 
STYLE  NYLON RING 
THREAD SIZE  M100X2 

Buy LOCKNUT-SPECIAL 1261971 Caterpillar genuine, new aftermarket tractor parts with delivery
EXCAVATOR, SHOVEL LOGGER,

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$23.99

16 Oct 2025

US: Work House Sign
Bahía de Mantarrayas Spanish Black Sign Arrow Down Aluminum Composite Sign 15 x 18 inches
Work House Signs Construcción de aluminio compuesto: ligero, fuerte y duradero. No se oxida ni se desgasta. Perfecto para uso prolongado en interiores o exteriores. || Disponible en 3 tamaños versátiles: elige el tamaño ideal para tu espacio, ya sea una pared pequeña o un área más grande. || Resistente al clima: soporta lluvia, sol y viento. Ideal para interiores o exteriores, sin perder color ni forma. || Montaje personalizable: sin agujeros pre-hechos, tú decides dónde perforar con cualquier broca estándar. Se adapta a cualquier superficie. || Hecho en EE.UU. con orgullo: diseñado e impreso por nuestro equipo local en Pennsylvania. Calidad artesanal de pequeño negocio.
$444.98

05 Jul 2024

US: Fast 404
1261971 LockNutt Fits CATERPILLARR Models 1261971
BSlocator mpn: 1261971
$240.12
 

25 Jul 2022
13.3379[6.00] Pounds
US: TakePart
Caterpillar LOCKNUT (1261971) New Aftermarket By CTP
CTP
Number on catalog scheme: 18
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Compatible equipment models: 1261971:

Information:

Engine Identification
Caterpillar engines are identified with serial numbers, with performance specification numbers, and with arrangement numbers. In some of the cases, modification numbers are used. These numbers are shown on the Serial Number Plate and the Information Plate that are mounted on the engine.Caterpillar dealers need these numbers in order to determine the components that were included with the engine. This permits accurate identification of replacement part numbers.Serial Number Plate
Illustration 1 g01310243
(1) Location of the Serial Number PlateThe Serial Number Plate is on the left side of the cylinder block near the rear of the engine.
Illustration 2 g00123229
Serial Number PlateThe following information is stamped on the Serial Number Plate: engine serial number, model and arrangement number.Information Plate
Illustration 3 g01093419
(1) Location of the Information PlateThe Information Plate is on the left side top surface of the cylinder block in front of the front cylinder head.
Illustration 4 g00102789
Information PlateThe following information is stamped on the Information Plate: engine's maximum altitude, horsepower, high idle, full load rpm, fuel settings and other information.

Cat SIS web machinery list:

Caterpillar parts catalog
352F Excavator WYA00001-UP (MACHINE) POWERED BY C13 Engine
345D Mobile Hydraulic Power Units L5R00001-UP (MACHINE) POWERED BY C13 Engine
R1700 Load Haul Dump KT400001-UP (MACHINE) POWERED BY C13 Engine
MH3295 Material Handler PA900001-UP (MACHINE) POWERED BY C18 Engine
345C Shovel Logger A3L00001-UP (MACHINE) POWERED BY C13 Engine
352F XE VG Excavator XAJ00001-UP (MACHINE) POWERED BY C13 Engine
352F XE VG Excavator SD200001-UP (MACHINE) POWERED BY C13 Engine
349F & 349F L Excavators HLB00001-UP (MACHINE) POWERED BY C13 Engine
352F Excavator WNA00001-UP (MACHINE) POWERED BY C13 Engine
349D2 L Excavator GAX00001-UP (MACHINE) POWERED BY C13 Engine
374F L Excavator EBF00001-UP (MACHINE) POWERED BY C15 Engine
352F XE Excavator MDR00001-UP (MACHINE) POWERED BY C13 Engine
352F Excavator RBF00001-UP (MACHINE) POWERED BY C13 Engine
349D2 L Excavator WEC00001-UP (MACHINE) POWERED BY C13 Engine
349 Excavator LKG00001-UP (MACHINE) POWERED BY C13 Engine
352 Excavator MGR00001-UP (MACHINE) POWERED BY C13 Engine
349 Excavator RBY00001-UP (MACHINE) POWERED BY C13 Engine
345B and 345B L Excavators 4SS00001-UP (MACHINE)
345B, 345B L & 345B LC Excavator 2SW00001-UP (MACHINE) POWERED BY 3176C Engine
365B L Excavators 9PZ00001-UP (MACHINE) POWERED BY 3196 Engine
345B L Series II Excavators AGS00001-UP (MACHINE) POWERED BY 3176C Engine
345B & 345B L Series II Excavators AKJ00001-UP (MACHINE) POWERED BY 3176C Engine
345B Series II Excavators ALD00001-UP (MACHINE) POWERED BY 3176C Engine
345B Series II Excavator CCC00001-UP (MACHINE) POWERED BY 3176C Engine
345B Series II Excavator DCW00001-UP (MACHINE) POWERED BY 3176 Engine
365B L Material Handler CTY00001-UP (MACHINE) POWERED BY 3196 Engine
365B Series II Excavator DER00001-UP (MACHINE) POWERED BY 3196 Engine
365B Series II Excavator CFJ00001-UP (MACHINE) POWERED BY 3196 Engine
365B Series II Excavator JMB00001-UP (MACHINE) POWERED BY 3196 Engine
365B Material Handler SDL00001-UP (MACHINE) POWERED BY 3196 Engine
365C L Excavator ELC00001-UP (MACHINE) POWERED BY C-15 Engine
345C L Hydraulic Excavator ESD00001-UP (MACHINE) POWERED BY C13 Engine
345C LC Excavator DHP00001-UP (MACHINE) POWERED BY C13 Engine
345C & 345C L Excavators BWY00001-UP (MACHINE) POWERED BY C13 Engine
365C L Excavator MEM00001-UP (MACHINE) POWERED BY C-15 Engine
365C L Excavator MCS00001-UP (MACHINE) POWERED BY C-15 Engine
365C L Excavator FEN00001-UP (MACHINE) POWERED BY C-15 Engine
345C Excavator TAJ00001-UP (MACHINE) POWERED BY C13 Engine
385C Material Handler WAW00001-UP (MACHINE) POWERED BY C-18 Engine
345C & 345C L Hydraulic Excavator ELS00001-UP (MACHINE) POWERED BY C13 Engine
345C UHD Excavator SPC00001-UP (MACHINE) POWERED BY C13 Engine
345C L Hydraulic Excavator FPC00001-UP (MACHINE) POWERED BY C13 Engine
345C L Hydraulic Excavator GPH00001-UP (MACHINE) POWERED BY C13 Engine
345C L Hydraulic Excavator LYS00001-UP (MACHINE) POWERED BY C13 Engine
365C L Excavator MCY00001-UP (MACHINE) POWERED BY C-15 Engine
365C L Material Handler GWC00001-UP (MACHINE) POWERED BY C-15 Engine
345D Excavator NEG00001-UP (MACHINE) POWERED BY C13 Engine
345D L Excavator JKN00001-UP (MACHINE) POWERED BY C13 Engine
345D L Excavators PBT00001-UP (MACHINE) POWERED BY C13 Engine
345D L Excavator EEH00001-UP (MACHINE) POWERED BY C13 Engine
365C L Mobile Hydraulic Power Unit GSZ00001-UP (MACHINE) POWERED BY C15 Engine
345D L Excavator YEE00001-UP (MACHINE) POWERED BY C13 Engine
345C L Excavator S5M00001-UP (MACHINE) POWERED BY C13 Engine
345D L Excavators RGG00001-UP (MACHINE) POWERED BY C13 Engine
345D L Excavators RGD00001-UP (MACHINE) POWERED BY C13 Engine
374D L Excavator PJA00001-UP (MACHINE) POWERED BY C15 Engine
374D L Excavator PAX00001-UP (MACHINE) POWERED BY C15 Engine
374D L Excavator PAP00001-UP (MACHINE) POWERED BY C-15 Engine
374D L Excavator PAS00001-UP (MACHINE) POWERED BY C15 Engine
345C L Excavator SCN00001-UP (MACHINE) POWERED BY C13 Engine


Parts locknut Caterpillar catalog:

1687800 LOCKNUT
3406E, 3412, 3412E, 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C, 365C, 365C L, 365C L MH, 385C, 385C FS, 385C L, 385C L MH, 5130, 5130B, 5230, 5230B, 631D, 631G, 637D, 637E, 637G, 657E,...
1794324 LOCKNUT
10 FT, 10-20B, 10B, 120M, 2864C, 301.5, 301.6C, 302.5, 302.5C, 302.7D, 320D, 323D L, 323D LN, 323D SA, 324D, 324D L, 325D L, 329D L, 3304, 3306B, 330D L, 336D, 336D L, 3406C, 3412, 345C, 345C L, 3508,...
3752467 LOCKNUT-FLANGE
24M, 349E, 349E L, 349E L HVG, 349E L VG, 349F L, 365C, 365C L, 365C L MH, 374D L, 374F L, 385C, 385C FS, 385C L, 385C L MH, 390D, 390D L, 390F L, 583T, 587T, 621B, 621F, 621G, 621H, 621K, 623E, 623F,...
1475835 LOCKNUT-SPECIAL
311D LRR, 312B L, 312C, 312D, 312E, 314D LCR, 314E LCR, 315, 315B, 315B L, 315C, 315D L, 316E L, 317B LN, 318B, 318C, 318D L, 318D2 L, 318E L, 319C, 319D, 319D L, 319D LN, 320B, 320C, 320D, 320D FM, 3...
1438151 LOCKNUT-SPECIAL
307C, 307D, 308C, 308D, 311D LRR, 312B, 312B L, 312C, 312C L, 312D, 312D L, 313B, 313D, 313D2, 314C, 314D CR, 314D LCR, 345B II, 345C, M315C, M316C
7Y4622 LOCKNUT
1090, 1190, 1190T, 1290T, 1390, 2290, 2390, 2391, 2491, 2590, 318B, 318C, 319C, 319D, 319D L, 319D LN, 320 L, 320B, 320C, 320E LN, 320N, 321D LCR, 322 FM L, 322 LN, 322B L, 322B LN, 322C, 322C FM, 323...
1884192 LOCKNUT-SPECIAL
312D2, 374D L, 374F L, 385B, 385C, 385C L, 390D, 390D L, 390F L
7Y4695 LOCKNUT
1390, 2590, 320 L, 320B, 320C, 320N, 322 LN, 322B, 322B L, 322B LN, 322C, 322C FM, 323D L, 324D, 324D L, 324D LN, 324E, 324E L, 324E LN, 325, 325 L, 325 LN, 325B, 325B L, 325C, 325C FM, 325C L, 325D, ...
1232060 LOCKNUT
1390, 2590, 320B, 320C, 320D, 320D FM, 320D2, 320D2 L, 322B L, 322B LN, 322C, 322C FM, 323D L, 323D LN, 323D SA, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325B L, 325C, 325C FM, 325D, 325D FM, 325D ...
7Y4956 LOCKNUT
322B L, 322C, 322C FM, 324D, 324D FM, 324D FM LL, 325B L, 325C, 325D L, 328D LCR, 330, 330 FM L, 330 L, 330B, 330B L, 330C, 330C FM, 330C L, 330D, 330D FM, 330D L, 330D LN, 336D, 336D L, 336D LN, 336D...
1232112 LOCKNUT-SPECIAL
324D, 325B L, 325C, 325C FM, 325D FM, 325D FM LL, 329D LN, 330B, 330B L, 330C, 330C FM, 330C L, 330C MH, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 336E, 336E HVG,...
1163513 LOCKNUT-SPECIAL
345C, 350, 350 L, 365B, 365B II, 365B L, 365C, 365C L, 365C L MH, 374D L, 374F L, 375, 375 L, 385B, 385C, 385C L, 390D, 390D L, 390F L, 5080
3034212 LOCKNUT
HF201, HF201B, HF221
3468963 LOCKNUT
HF201, HF201B, HF221, SC-57, SH-56B, SS-56
2545697 LOCKNUT-SPECIAL
1090, 1190, 1190T, 1290T, 2290, 2390, 2391, 2491, 511, 521, 521B, 522, 522B, 532, TK711, TK721, TK722, TK732
2354144 LOCKNUT
320C, 320D FM, 543, HF181, HF201, HF202, HF221, HF222
1948339 LOCKNUT-SPECIAL
320C FM, 322C FM, 325C FM, 330C FM
2130349 LOCKNUT
517, 525B, 525C, 527
3809877 LOCKNUT
2384C, 2484C, 559C, 579C
8T0696 LOCKNUT
2470C, 2570C, 2670C, 2864C, 553C, 563C, 573C, 586C
4262639 LOCKNUT-FLANGE
2470C, 2570C, 2670C, 2864C, 553C, 563C, 573C, 586C
3622885 LOCKNUT
2470C, 2570C, 2670C, 2864C, 553C, 563C, 573C, 586C
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