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PartsTable / COMPONENT / 51111-1
51111-1 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The SHAFT ASSEMBLY,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, drive_end_shape: SQUARE SINGLE END INTERNAL, special_features: STANDARD LENGTH, style_designator: INTERNAL-INTERNAL, features_provided: MANUAL TOOL, surface_treatment: CHROMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-927-9252, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
51111-1
NSN: 2520-00-927-9252
FSC: 2520
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
drive_end_shapeSQUARE SINGLE END INTERNAL
special_featuresSTANDARD LENGTH
style_designatorINTERNAL-INTERNAL
features_providedMANUAL TOOL
surface_treatmentCHROMIUM OVERALL
drive_surface_size0.250 INCHES NOMINAL SINGLE END IN
wrenching_surface_size0.344 INCHES NOMINAL SINGLE END IN
end_item_identification2355226227966
wrenching_surface_shape6 POINT SINGLE END INTERNAL
nondefinitive_spec/std_data1 TYPE AND 1 CLASS
specification/standard_data05047-ASME B107.1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN2520-00-927-9252
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT ASSEMBLY,SHOULDERED TITLE COMPONENT PN 51111-1 MFR SHAFT ASSEMBLY,SHOULDE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
511111Interchangeable
interchangeable cross-reference
interchangeable
00943496000Interchangeable
interchangeable cross-reference
interchangeable
B107.1 TY1CL1Interchangeable
interchangeable cross-reference
interchangeable
444109Interchangeable
interchangeable cross-reference
interchangeable
511.111Interchangeable
interchangeable cross-reference
interchangeable
2098680Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51111-1?
51111-1 is a SHAFT ASSEMBLY,SHOULDERED.
What parts can replace 51111-1?
There are 10 known substitutes for 51111-1: 511111, 00943496000, B107.1 TY1CL1 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51111-1?
51111-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2520-00-927-9252. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026